89978554 has 8 divisors (see below), whose sum is σ = 139321728. Its totient is φ = 43537980.

The previous prime is 89978549. The next prime is 89978563. The reversal of 89978554 is 45587998.

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

It is a super-2 number, since 2×89978554² = 16192280359861832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89978495 and 89978504.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 725572 + ... + 725695.

It is an arithmetic number, because the mean of its divisors is an integer number (17415216).

Almost surely, 2^89978554 is an apocalyptic number.

89978554 is a deficient number, since it is larger than the sum of its proper divisors (49343174).

89978554 is a wasteful number, since it uses less digits than its factorization.

89978554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451300.

The product of its digits is 3628800, while the sum is 55.

The square root of 89978554 is about 9485.7026097174. The cubic root of 89978554 is about 448.1048761961.

The spelling of 89978554 in words is "eighty-nine million, nine hundred seventy-eight thousand, five hundred fifty-four".