90164212 has 6 divisors (see below), whose sum is σ = 157787378. Its totient is φ = 45082104.

The previous prime is 90164203. The next prime is 90164237. The reversal of 90164212 is 21246109.

It can be written as a sum of positive squares in only one way, i.e., 51897616 + 38266596 = 7204^2 + 6186^2 .

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, 11270523 + ... + 11270530.

Almost surely, 2^90164212 is an apocalyptic number.

It is an amenable number.

90164212 is a deficient number, since it is larger than the sum of its proper divisors (67623166).

90164212 is a wasteful number, since it uses less digits than its factorization.

90164212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22541057 (or 22541055 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 90164212 is about 9495.4837686134. The cubic root of 90164212 is about 448.4128647743.

The spelling of 90164212 in words is "ninety million, one hundred sixty-four thousand, two hundred twelve".