89977642 has 8 divisors (see below), whose sum is σ = 135826596. Its totient is φ = 44702112.

The previous prime is 89977631. The next prime is 89977649. The reversal of 89977642 is 24677998.

It can be written as a sum of positive squares in 2 ways, for example, as 82464561 + 7513081 = 9081^2 + 2741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 89977642.

It is not an unprimeable number, because it can be changed into a prime (89977649) 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, 142963 + ... + 143590.

Almost surely, 2^89977642 is an apocalyptic number.

89977642 is a deficient number, since it is larger than the sum of its proper divisors (45848954).

89977642 is a wasteful number, since it uses less digits than its factorization.

89977642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286712.

The product of its digits is 1524096, while the sum is 52.

The square root of 89977642 is about 9485.6545372473. The cubic root of 89977642 is about 448.1033622315.

The spelling of 89977642 in words is "eighty-nine million, nine hundred seventy-seven thousand, six hundred forty-two".