90091394 has 16 divisors (see below), whose sum is σ = 140887296. Its totient is φ = 43158000.

The previous prime is 90091367. The next prime is 90091427. The reversal of 90091394 is 49319009.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932 + ... + 13455.

It is an arithmetic number, because the mean of its divisors is an integer number (8805456).

Almost surely, 2^90091394 is an apocalyptic number.

90091394 is a deficient number, since it is larger than the sum of its proper divisors (50795902).

90091394 is a wasteful number, since it uses less digits than its factorization.

90091394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14521.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 90091394 is about 9491.6486449931. The cubic root of 90091394 is about 448.2921172277.

The spelling of 90091394 in words is "ninety million, ninety-one thousand, three hundred ninety-four".