90436401 has 24 divisors (see below), whose sum is σ = 142886016. Its totient is φ = 54663840.

The previous prime is 90436373. The next prime is 90436403. The reversal of 90436401 is 10463409.

It is not a de Polignac number, because 90436401 - 2⁶ = 90436337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90436403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44851 + ... + 46823.

It is an arithmetic number, because the mean of its divisors is an integer number (5953584).

Almost surely, 2^90436401 is an apocalyptic number.

It is an amenable number.

90436401 is a deficient number, since it is larger than the sum of its proper divisors (52449615).

90436401 is a wasteful number, since it uses less digits than its factorization.

90436401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2450 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 90436401 is about 9509.8055185161. The cubic root of 90436401 is about 448.8636365148.

The spelling of 90436401 in words is "ninety million, four hundred thirty-six thousand, four hundred one".