90920212 has 6 divisors (see below), whose sum is σ = 159110378. Its totient is φ = 45460104.

The previous prime is 90920209. The next prime is 90920227. The reversal of 90920212 is 21202909.

It can be written as a sum of positive squares in only one way, i.e., 60933636 + 29986576 = 7806^2 + 5476^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11365023 + ... + 11365030.

Almost surely, 2^90920212 is an apocalyptic number.

It is an amenable number.

90920212 is a deficient number, since it is larger than the sum of its proper divisors (68190166).

90920212 is a wasteful number, since it uses less digits than its factorization.

90920212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22730057 (or 22730055 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 90920212 is about 9535.2090695485. The cubic root of 90920212 is about 449.6626475710.

The spelling of 90920212 in words is "ninety million, nine hundred twenty thousand, two hundred twelve".