90038929 has 4 divisors (see below), whose sum is σ = 94777840. Its totient is φ = 85300020.

The previous prime is 90038899. The next prime is 90038933. The reversal of 90038929 is 92983009.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92983009 = 7 ⋅13283287.

It is a cyclic number.

It is not a de Polignac number, because 90038929 - 2⁷ = 90038801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90038891 and 90038900.

It is not an unprimeable number, because it can be changed into a prime (90038029) 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, 2369427 + ... + 2369464.

It is an arithmetic number, because the mean of its divisors is an integer number (23694460).

Almost surely, 2^90038929 is an apocalyptic number.

It is an amenable number.

90038929 is a deficient number, since it is larger than the sum of its proper divisors (4738911).

90038929 is a wasteful number, since it uses less digits than its factorization.

90038929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738910.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 90038929 is about 9488.8844971366. The cubic root of 90038929 is about 448.2050788994.

The spelling of 90038929 in words is "ninety million, thirty-eight thousand, nine hundred twenty-nine".