90388629 has 20 divisors (see below), whose sum is σ = 135570336. Its totient is φ = 60015816.

The previous prime is 90388601. The next prime is 90388631. The reversal of 90388629 is 92688309.

It is not a de Polignac number, because 90388629 - 2⁹ = 90388117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90380629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19182 + ... + 23424.

Almost surely, 2^90388629 is an apocalyptic number.

It is an amenable number.

90388629 is a deficient number, since it is larger than the sum of its proper divisors (45181707).

90388629 is a wasteful number, since it uses less digits than its factorization.

90388629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518 (or 4509 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 90388629 is about 9507.2934634416. The cubic root of 90388629 is about 448.7845868910.

The spelling of 90388629 in words is "ninety million, three hundred eighty-eight thousand, six hundred twenty-nine".