89442505 has 16 divisors (see below), whose sum is σ = 111067920. Its totient is φ = 69092352.

The previous prime is 89442499. The next prime is 89442517. The reversal of 89442505 is 50524498.

It can be written as a sum of positive squares in 8 ways, for example, as 121104 + 89321401 = 348^2 + 9451^2 .

It is a cyclic number.

It is not a de Polignac number, because 89442505 - 2³ = 89442497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 23581 + ... + 27109.

It is an arithmetic number, because the mean of its divisors is an integer number (6941745).

Almost surely, 2^89442505 is an apocalyptic number.

It is an amenable number.

89442505 is a deficient number, since it is larger than the sum of its proper divisors (21625415).

89442505 is a wasteful number, since it uses less digits than its factorization.

89442505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 89442505 is about 9457.4047708661. The cubic root of 89442505 is about 447.2132386664.

It can be divided in two parts, 8944 and 2505, that added together give a square (11449 = 107²).

The spelling of 89442505 in words is "eighty-nine million, four hundred forty-two thousand, five hundred five".