76939009 has 16 divisors (see below), whose sum is σ = 89907840. Its totient is φ = 64477440.

The previous prime is 76938977. The next prime is 76939061. The reversal of 76939009 is 90093967.

It is a cyclic number.

It is not a de Polignac number, because 76939009 - 2⁵ = 76938977 is a prime.

It is a super-2 number, since 2×76939009² = 11839222211804162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76939069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99147 + ... + 99919.

It is an arithmetic number, because the mean of its divisors is an integer number (5619240).

Almost surely, 2^76939009 is an apocalyptic number.

It is an amenable number.

76939009 is a deficient number, since it is larger than the sum of its proper divisors (12968831).

76939009 is a wasteful number, since it uses less digits than its factorization.

76939009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 76939009 is about 8771.4884141746. The cubic root of 76939009 is about 425.3197298780.

The spelling of 76939009 in words is "seventy-six million, nine hundred thirty-nine thousand, nine".