118639069 has 4 divisors (see below), whose sum is σ = 120877596. Its totient is φ = 116400544.

The previous prime is 118639049. The next prime is 118639099. The reversal of 118639069 is 960936811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30935844 + 87703225 = 5562^2 + 9365^2 .

It is a cyclic number.

It is not a de Polignac number, because 118639069 - 2¹³ = 118630877 is a prime.

It is a super-2 number, since 2×118639069² = 28150457386373522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118639009) 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, 1119184 + ... + 1119289.

It is an arithmetic number, because the mean of its divisors is an integer number (30219399).

Almost surely, 2^118639069 is an apocalyptic number.

It is an amenable number.

118639069 is a deficient number, since it is larger than the sum of its proper divisors (2238527).

118639069 is an equidigital number, since it uses as much as digits as its factorization.

118639069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238526.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 118639069 is about 10892.1563062600. The cubic root of 118639069 is about 491.3706852990.

The spelling of 118639069 in words is "one hundred eighteen million, six hundred thirty-nine thousand, sixty-nine".