47164489 has 4 divisors (see below), whose sum is σ = 47261824. Its totient is φ = 47067156.

The previous prime is 47164483. The next prime is 47164493. The reversal of 47164489 is 98446174.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98446174 = 2 ⋅49223087.

It is a cyclic number.

It is not a de Polignac number, because 47164489 - 2²³ = 38775881 is a prime.

It is a super-2 number, since 2×47164489² = 4448978045262242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47164483) 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, 47937 + ... + 48910.

It is an arithmetic number, because the mean of its divisors is an integer number (11815456).

Almost surely, 2^47164489 is an apocalyptic number.

It is an amenable number.

47164489 is a deficient number, since it is larger than the sum of its proper divisors (97335).

47164489 is an equidigital number, since it uses as much as digits as its factorization.

47164489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97334.

The product of its digits is 193536, while the sum is 43.

The square root of 47164489 is about 6867.6407157043. The cubic root of 47164489 is about 361.3031193863.

The spelling of 47164489 in words is "forty-seven million, one hundred sixty-four thousand, four hundred eighty-nine".