89770639 has 8 divisors (see below), whose sum is σ = 102702080. Its totient is φ = 76865976.

The previous prime is 89770601. The next prime is 89770663. The reversal of 89770639 is 93607798.

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

It is a cyclic number.

It is not a de Polignac number, because 89770639 - 2⁷ = 89770511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89770592 and 89770601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89770139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102 + ... + 13444.

It is an arithmetic number, because the mean of its divisors is an integer number (12837760).

Almost surely, 2^89770639 is an apocalyptic number.

89770639 is a deficient number, since it is larger than the sum of its proper divisors (12931441).

89770639 is a wasteful number, since it uses less digits than its factorization.

89770639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 89770639 is about 9474.7368828902. The cubic root of 89770639 is about 447.7594621136.

It can be divided in two parts, 89770 and 639, that added together give a palindrome (90409).

The spelling of 89770639 in words is "eighty-nine million, seven hundred seventy thousand, six hundred thirty-nine".