76909089 has 4 divisors (see below), whose sum is σ = 102545456. Its totient is φ = 51272724.

The previous prime is 76909087. The next prime is 76909097. The reversal of 76909089 is 98090967.

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 not a de Polignac number, because 76909089 - 2¹ = 76909087 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76909087) 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, 12818179 + ... + 12818184.

It is an arithmetic number, because the mean of its divisors is an integer number (25636364).

Almost surely, 2^76909089 is an apocalyptic number.

It is an amenable number.

76909089 is a deficient number, since it is larger than the sum of its proper divisors (25636367).

76909089 is a wasteful number, since it uses less digits than its factorization.

76909089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25636366.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 76909089 is about 8769.7827225080. The cubic root of 76909089 is about 425.2645900280.

It can be divided in two parts, 7 and 6909089, that added together give a palindrome (6909096).

The spelling of 76909089 in words is "seventy-six million, nine hundred nine thousand, eighty-nine".