90903412 has 6 divisors (see below), whose sum is σ = 159080978. Its totient is φ = 45451704.

The previous prime is 90903409. The next prime is 90903431. The reversal of 90903412 is 21430909.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90136036 + 767376 = 9494^2 + 876^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362923 + ... + 11362930.

Almost surely, 2^90903412 is an apocalyptic number.

It is an amenable number.

90903412 is a deficient number, since it is larger than the sum of its proper divisors (68177566).

90903412 is a wasteful number, since it uses less digits than its factorization.

90903412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22725857 (or 22725855 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90903412 is about 9534.3280832998. The cubic root of 90903412 is about 449.6349500340.

The spelling of 90903412 in words is "ninety million, nine hundred three thousand, four hundred twelve".