90909374 has 16 divisors (see below), whose sum is σ = 144072000. Its totient is φ = 42952224.

The previous prime is 90909373. The next prime is 90909463. The reversal of 90909374 is 47390909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90909373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13949 + ... + 19400.

It is an arithmetic number, because the mean of its divisors is an integer number (9004500).

Almost surely, 2^90909374 is an apocalyptic number.

90909374 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

90909374 is a deficient number, since it is larger than the sum of its proper divisors (53162626).

90909374 is a wasteful number, since it uses less digits than its factorization.

90909374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33427.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 90909374 is about 9534.6407378569. The cubic root of 90909374 is about 449.6447797529.

The spelling of 90909374 in words is "ninety million, nine hundred nine thousand, three hundred seventy-four".