90847972 has 12 divisors (see below), whose sum is σ = 159231996. Its totient is φ = 45353120.

The previous prime is 90847961. The next prime is 90847973. The reversal of 90847972 is 27974809.

90847972 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 25948836 + 64899136 = 5094^2 + 8056^2 .

It is not an unprimeable number, because it can be changed into a prime (90847973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14779 + ... + 20002.

It is an arithmetic number, because the mean of its divisors is an integer number (13269333).

Almost surely, 2^90847972 is an apocalyptic number.

It is an amenable number.

90847972 is a deficient number, since it is larger than the sum of its proper divisors (68384024).

90847972 is a wasteful number, since it uses less digits than its factorization.

90847972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35438 (or 35436 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 90847972 is about 9531.4202509385. The cubic root of 90847972 is about 449.5435239425.

It can be divided in two parts, 90847 and 972, that added together give a palindrome (91819).

The spelling of 90847972 in words is "ninety million, eight hundred forty-seven thousand, nine hundred seventy-two".