90605403 has 12 divisors (see below), whose sum is σ = 149570928. Its totient is φ = 51774480.

The previous prime is 90605399. The next prime is 90605407. The reversal of 90605403 is 30450609.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90605399) and next prime (90605407).

It is not a de Polignac number, because 90605403 - 2² = 90605399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90605407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719028 + ... + 719153.

It is an arithmetic number, because the mean of its divisors is an integer number (12464244).

Almost surely, 2^90605403 is an apocalyptic number.

90605403 is a deficient number, since it is larger than the sum of its proper divisors (58965525).

90605403 is a wasteful number, since it uses less digits than its factorization.

90605403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438194 (or 1438191 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 90605403 is about 9518.6870418141. The cubic root of 90605403 is about 449.1430654726.

The spelling of 90605403 in words is "ninety million, six hundred five thousand, four hundred three".