90372403 has 4 divisors (see below), whose sum is σ = 98588088. Its totient is φ = 82156720.

The previous prime is 90372383. The next prime is 90372407. The reversal of 90372403 is 30427309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30427309 = 11 ⋅2766119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90372403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90372407) 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, 4107826 + ... + 4107847.

It is an arithmetic number, because the mean of its divisors is an integer number (24647022).

Almost surely, 2^90372403 is an apocalyptic number.

90372403 is a deficient number, since it is larger than the sum of its proper divisors (8215685).

90372403 is a wasteful number, since it uses less digits than its factorization.

90372403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8215684.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 90372403 is about 9506.4400802824. The cubic root of 90372403 is about 448.7577309521.

The spelling of 90372403 in words is "ninety million, three hundred seventy-two thousand, four hundred three".