89378639 has 16 divisors (see below), whose sum is σ = 110677248. Its totient is φ = 70422912.

The previous prime is 89378629. The next prime is 89378651. The reversal of 89378639 is 93687398.

It is not a de Polignac number, because 89378639 - 2¹² = 89374543 is a prime.

It is a super-2 number, since 2×89378639² = 15977082218984642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89378629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3617 + ... + 13850.

It is an arithmetic number, because the mean of its divisors is an integer number (6917328).

Almost surely, 2^89378639 is an apocalyptic number.

89378639 is a deficient number, since it is larger than the sum of its proper divisors (21298609).

89378639 is a wasteful number, since it uses less digits than its factorization.

89378639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534.

The product of its digits is 1959552, while the sum is 53.

The square root of 89378639 is about 9454.0276602092. The cubic root of 89378639 is about 447.1067698179.

It can be divided in two parts, 8937 and 8639, that added together give a cube (17576 = 26³).

The spelling of 89378639 in words is "eighty-nine million, three hundred seventy-eight thousand, six hundred thirty-nine".