47964989 has 4 divisors (see below), whose sum is σ = 47986656. Its totient is φ = 47943324.

The previous prime is 47964977. The next prime is 47964991. The reversal of 47964989 is 98946974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47964989 - 2²⁴ = 31187773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47964919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7079 + ... + 12084.

It is an arithmetic number, because the mean of its divisors is an integer number (11996664).

Almost surely, 2^47964989 is an apocalyptic number.

It is an amenable number.

47964989 is a deficient number, since it is larger than the sum of its proper divisors (21667).

47964989 is a wasteful number, since it uses less digits than its factorization.

47964989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21666.

The product of its digits is 3919104, while the sum is 56.

The square root of 47964989 is about 6925.6760680817. The cubic root of 47964989 is about 363.3357370620.

The spelling of 47964989 in words is "forty-seven million, nine hundred sixty-four thousand, nine hundred eighty-nine".