47972437 has 2 divisors, whose sum is σ = 47972438. Its totient is φ = 47972436.

The previous prime is 47972401. The next prime is 47972489. The reversal of 47972437 is 73427974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 22982436 = 4999^2 + 4794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47972437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47972393 and 47972402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47972237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23986218 + 23986219.

It is an arithmetic number, because the mean of its divisors is an integer number (23986219).

Almost surely, 2^47972437 is an apocalyptic number.

It is an amenable number.

47972437 is a deficient number, since it is larger than the sum of its proper divisors (1).

47972437 is an equidigital number, since it uses as much as digits as its factorization.

47972437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 47972437 is about 6926.2137564473. The cubic root of 47972437 is about 363.3545423376.

The spelling of 47972437 in words is "forty-seven million, nine hundred seventy-two thousand, four hundred thirty-seven".