90319901 has 16 divisors (see below), whose sum is σ = 109791360. Its totient is φ = 72576000.

The previous prime is 90319813. The next prime is 90319927. The reversal of 90319901 is 10991309.

It is not a de Polignac number, because 90319901 - 2¹⁸ = 90057757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90319961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9401 + ... + 16401.

It is an arithmetic number, because the mean of its divisors is an integer number (6861960).

Almost surely, 2^90319901 is an apocalyptic number.

It is an amenable number.

90319901 is a deficient number, since it is larger than the sum of its proper divisors (19471459).

90319901 is a wasteful number, since it uses less digits than its factorization.

90319901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 90319901 is about 9503.6782879052. The cubic root of 90319901 is about 448.6708119310.

The spelling of 90319901 in words is "ninety million, three hundred nineteen thousand, nine hundred one".