47801639 has 2 divisors, whose sum is σ = 47801640. Its totient is φ = 47801638.

The previous prime is 47801563. The next prime is 47801647. The reversal of 47801639 is 93610874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47801639 - 2²⁴ = 31024423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47801239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23900819 + 23900820.

It is an arithmetic number, because the mean of its divisors is an integer number (23900820).

Almost surely, 2^47801639 is an apocalyptic number.

47801639 is a deficient number, since it is larger than the sum of its proper divisors (1).

47801639 is an equidigital number, since it uses as much as digits as its factorization.

47801639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 47801639 is about 6913.8729377969. The cubic root of 47801639 is about 362.9228081252.

The spelling of 47801639 in words is "forty-seven million, eight hundred one thousand, six hundred thirty-nine".