89442491 has 4 divisors (see below), whose sum is σ = 94703832. Its totient is φ = 84181152.

The previous prime is 89442487. The next prime is 89442497. The reversal of 89442491 is 19424498.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89442491 - 2² = 89442487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89442497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2630645 + ... + 2630678.

It is an arithmetic number, because the mean of its divisors is an integer number (23675958).

Almost surely, 2^89442491 is an apocalyptic number.

89442491 is a deficient number, since it is larger than the sum of its proper divisors (5261341).

89442491 is a wasteful number, since it uses less digits than its factorization.

89442491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261340.

The product of its digits is 82944, while the sum is 41.

The square root of 89442491 is about 9457.4040307053. The cubic root of 89442491 is about 447.2132153330.

The spelling of 89442491 in words is "eighty-nine million, four hundred forty-two thousand, four hundred ninety-one".