47456389 has 4 divisors (see below), whose sum is σ = 47802924. Its totient is φ = 47109856.

The previous prime is 47456369. The next prime is 47456399. The reversal of 47456389 is 98365474.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36180225 + 11276164 = 6015^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 47456389 - 2²⁵ = 13901957 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47456369) 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, 173062 + ... + 173335.

It is an arithmetic number, because the mean of its divisors is an integer number (11950731).

Almost surely, 2^47456389 is an apocalyptic number.

It is an amenable number.

47456389 is a deficient number, since it is larger than the sum of its proper divisors (346535).

47456389 is a wasteful number, since it uses less digits than its factorization.

47456389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346534.

The product of its digits is 725760, while the sum is 46.

The square root of 47456389 is about 6888.8597750281. The cubic root of 47456389 is about 362.0469526921.

The spelling of 47456389 in words is "forty-seven million, four hundred fifty-six thousand, three hundred eighty-nine".