47388637 has 2 divisors, whose sum is σ = 47388638. Its totient is φ = 47388636.

The previous prime is 47388617. The next prime is 47388667. The reversal of 47388637 is 73688374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32558436 + 14830201 = 5706^2 + 3851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47388637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47388617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23694318 + 23694319.

It is an arithmetic number, because the mean of its divisors is an integer number (23694319).

Almost surely, 2^47388637 is an apocalyptic number.

It is an amenable number.

47388637 is a deficient number, since it is larger than the sum of its proper divisors (1).

47388637 is an equidigital number, since it uses as much as digits as its factorization.

47388637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 46.

The square root of 47388637 is about 6883.9405139789. The cubic root of 47388637 is about 361.8745762695.

The spelling of 47388637 in words is "forty-seven million, three hundred eighty-eight thousand, six hundred thirty-seven".