90397870 has 16 divisors (see below), whose sum is σ = 162946368. Its totient is φ = 36108000.

The previous prime is 90397861. The next prime is 90397897. The reversal of 90397870 is 7879309.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1492 + ... + 13528.

It is an arithmetic number, because the mean of its divisors is an integer number (10184148).

Almost surely, 2^90397870 is an apocalyptic number.

90397870 is a deficient number, since it is larger than the sum of its proper divisors (72548498).

90397870 is a wasteful number, since it uses less digits than its factorization.

90397870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12795.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 90397870 is about 9507.7794463271. The cubic root of 90397870 is about 448.7998803967.

The spelling of 90397870 in words is "ninety million, three hundred ninety-seven thousand, eight hundred seventy".