89449947 has 16 divisors (see below), whose sum is σ = 132677280. Its totient is φ = 59561856.

The previous prime is 89449939. The next prime is 89449961. The reversal of 89449947 is 74994498.

It is a happy number.

It is not a de Polignac number, because 89449947 - 2³ = 89449939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89449893 and 89449902.

It is not an unprimeable number, because it can be changed into a prime (89449907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30823 + ... + 33599.

It is an arithmetic number, because the mean of its divisors is an integer number (8292330).

Almost surely, 2^89449947 is an apocalyptic number.

89449947 is a deficient number, since it is larger than the sum of its proper divisors (43227333).

89449947 is a wasteful number, since it uses less digits than its factorization.

89449947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979 (or 3973 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 89449947 is about 9457.7982110003. The cubic root of 89449947 is about 447.2256416755.

The spelling of 89449947 in words is "eighty-nine million, four hundred forty-nine thousand, nine hundred forty-seven".