47864745 has 12 divisors (see below), whose sum is σ = 82965636. Its totient is φ = 25527840.

The previous prime is 47864737. The next prime is 47864759. The reversal of 47864745 is 54746874.

It can be written as a sum of positive squares in 2 ways, for example, as 26409321 + 21455424 = 5139^2 + 4632^2 .

It is not a de Polignac number, because 47864745 - 2³ = 47864737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1063661 = 47864745 / (4 + 7 + 8 + 6 + 4 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 47864745.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 531786 + ... + 531875.

It is an arithmetic number, because the mean of its divisors is an integer number (6913803).

Almost surely, 2^47864745 is an apocalyptic number.

47864745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47864745 is a deficient number, since it is larger than the sum of its proper divisors (35100891).

47864745 is a wasteful number, since it uses less digits than its factorization.

47864745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063672 (or 1063669 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 47864745 is about 6918.4351554380. The cubic root of 47864745 is about 363.0824437653.

The spelling of 47864745 in words is "forty-seven million, eight hundred sixty-four thousand, seven hundred forty-five".