89442506 has 4 divisors (see below), whose sum is σ = 134163762. Its totient is φ = 44721252.

The previous prime is 89442499. The next prime is 89442517. The reversal of 89442506 is 60524498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60524498 = 2 ⋅30262249.

It can be written as a sum of positive squares in only one way, i.e., 86583025 + 2859481 = 9305^2 + 1691^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89442506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22360625 + ... + 22360628.

Almost surely, 2^89442506 is an apocalyptic number.

89442506 is a deficient number, since it is larger than the sum of its proper divisors (44721256).

89442506 is a wasteful number, since it uses less digits than its factorization.

89442506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44721255.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 89442506 is about 9457.4048237347. The cubic root of 89442506 is about 447.2132403330.

The spelling of 89442506 in words is "eighty-nine million, four hundred forty-two thousand, five hundred six".