90499403 has 4 divisors (see below), whose sum is σ = 90540528. Its totient is φ = 90458280.

The previous prime is 90499399. The next prime is 90499433. The reversal of 90499403 is 30499409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30499409 = 4973 ⋅6133.

It is a cyclic number.

It is not a de Polignac number, because 90499403 - 2² = 90499399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90499433) 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, 17063 + ... + 21728.

It is an arithmetic number, because the mean of its divisors is an integer number (22635132).

Almost surely, 2^90499403 is an apocalyptic number.

90499403 is a deficient number, since it is larger than the sum of its proper divisors (41125).

90499403 is a wasteful number, since it uses less digits than its factorization.

90499403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41124.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 90499403 is about 9513.1174175451. The cubic root of 90499403 is about 448.9678450790.

The spelling of 90499403 in words is "ninety million, four hundred ninety-nine thousand, four hundred three".