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130739489 = 443295123
BaseRepresentation
bin1111100101011…
…10110100100001
3100010000020212022
413302232310201
5231432130424
620550111225
73145160456
oct762566441
9303006768
10130739489
1167887571
123794b515
132111725a
141351382d
15b72795e
hex7caed21

130739489 has 4 divisors (see below), whose sum is σ = 131035056. Its totient is φ = 130443924.

The previous prime is 130739467. The next prime is 130739501. The reversal of 130739489 is 984937031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130739489 - 216 = 130673953 is a prime.

It is a super-2 number, since 2×1307394892 = 34185627967962242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130739419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147119 + ... + 148004.

It is an arithmetic number, because the mean of its divisors is an integer number (32758764).

Almost surely, 2130739489 is an apocalyptic number.

It is an amenable number.

130739489 is a deficient number, since it is larger than the sum of its proper divisors (295567).

130739489 is an equidigital number, since it uses as much as digits as its factorization.

130739489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295566.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 130739489 is about 11434.1370028525. The cubic root of 130739489 is about 507.5384251039.

The spelling of 130739489 in words is "one hundred thirty million, seven hundred thirty-nine thousand, four hundred eighty-nine".

Divisors: 1 443 295123 130739489