90436827 has 48 divisors (see below), whose sum is σ = 142356480. Its totient is φ = 50621760.

The previous prime is 90436823. The next prime is 90436837. The reversal of 90436827 is 72863409.

It is not a de Polignac number, because 90436827 - 2² = 90436823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (90436823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 712038 + ... + 712164.

It is an arithmetic number, because the mean of its divisors is an integer number (2965760).

Almost surely, 2^90436827 is an apocalyptic number.

90436827 is a deficient number, since it is larger than the sum of its proper divisors (51919653).

90436827 is a wasteful number, since it uses less digits than its factorization.

90436827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 90436827 is about 9509.8279164241. The cubic root of 90436827 is about 448.8643413033.

The spelling of 90436827 in words is "ninety million, four hundred thirty-six thousand, eight hundred twenty-seven".