90913293 has 8 divisors (see below), whose sum is σ = 134686400. Its totient is φ = 60608844.

The previous prime is 90913267. The next prime is 90913301. The reversal of 90913293 is 39231909.

It is not a de Polignac number, because 90913293 - 2⁵ = 90913261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90913213) 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, 1683553 + ... + 1683606.

It is an arithmetic number, because the mean of its divisors is an integer number (16835800).

Almost surely, 2^90913293 is an apocalyptic number.

It is an amenable number.

90913293 is a deficient number, since it is larger than the sum of its proper divisors (43773107).

90913293 is a wasteful number, since it uses less digits than its factorization.

90913293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367168 (or 3367162 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 90913293 is about 9534.8462494159. The cubic root of 90913293 is about 449.6512408856.

The spelling of 90913293 in words is "ninety million, nine hundred thirteen thousand, two hundred ninety-three".