130405949 has 4 divisors (see below), whose sum is σ = 137269440. Its totient is φ = 123542460.

The previous prime is 130405921. The next prime is 130405967. The reversal of 130405949 is 949504031.

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 a de Polignac number, because none of the positive numbers 2^k-130405949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130405909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431717 + ... + 3431754.

It is an arithmetic number, because the mean of its divisors is an integer number (34317360).

Almost surely, 2^130405949 is an apocalyptic number.

130405949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

130405949 is a deficient number, since it is larger than the sum of its proper divisors (6863491).

130405949 is an equidigital number, since it uses as much as digits as its factorization.

130405949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6863490.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 130405949 is about 11419.5424164018. The cubic root of 130405949 is about 507.1064502142.

The spelling of 130405949 in words is "one hundred thirty million, four hundred five thousand, nine hundred forty-nine".