47309457 has 8 divisors (see below), whose sum is σ = 67931584. Its totient is φ = 29113488.

The previous prime is 47309447. The next prime is 47309467. The reversal of 47309457 is 75490374.

It is an interprime number because it is at equal distance from previous prime (47309447) and next prime (47309467).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47309457 - 2¹¹ = 47307409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1213063 = 47309457 / (4 + 7 + 3 + 0 + 9 + 4 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47309407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606493 + ... + 606570.

It is an arithmetic number, because the mean of its divisors is an integer number (8491448).

Almost surely, 2^47309457 is an apocalyptic number.

It is an amenable number.

47309457 is a deficient number, since it is larger than the sum of its proper divisors (20622127).

47309457 is a wasteful number, since it uses less digits than its factorization.

47309457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213079.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 47309457 is about 6878.1870431095. The cubic root of 47309457 is about 361.6729160956.

The spelling of 47309457 in words is "forty-seven million, three hundred nine thousand, four hundred fifty-seven".