89921445 has 16 divisors (see below), whose sum is σ = 145150272. Its totient is φ = 47532800.

The previous prime is 89921423. The next prime is 89921459. The reversal of 89921445 is 54412998.

It is not a de Polignac number, because 89921445 - 2⁸ = 89921189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89921397 and 89921406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24831 + ... + 28220.

It is an arithmetic number, because the mean of its divisors is an integer number (9071892).

Almost surely, 2^89921445 is an apocalyptic number.

It is an amenable number.

89921445 is a deficient number, since it is larger than the sum of its proper divisors (55228827).

89921445 is a wasteful number, since it uses less digits than its factorization.

89921445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53172.

The product of its digits is 103680, while the sum is 42.

The square root of 89921445 is about 9482.6918646553. The cubic root of 89921445 is about 448.0100527214.

The spelling of 89921445 in words is "eighty-nine million, nine hundred twenty-one thousand, four hundred forty-five".