90712329 has 4 divisors (see below), whose sum is σ = 120949776. Its totient is φ = 60474884.

The previous prime is 90712301. The next prime is 90712331. The reversal of 90712329 is 92321709.

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 90712329 - 2⁸ = 90712073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90712329.

It is not an unprimeable number, because it can be changed into a prime (90712339) 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, 15118719 + ... + 15118724.

It is an arithmetic number, because the mean of its divisors is an integer number (30237444).

Almost surely, 2^90712329 is an apocalyptic number.

It is an amenable number.

90712329 is a deficient number, since it is larger than the sum of its proper divisors (30237447).

90712329 is a wasteful number, since it uses less digits than its factorization.

90712329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30237446.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 90712329 is about 9524.3020216707. The cubic root of 90712329 is about 449.3196781627.

The spelling of 90712329 in words is "ninety million, seven hundred twelve thousand, three hundred twenty-nine".