49847639 has 2 divisors, whose sum is σ = 49847640. Its totient is φ = 49847638.

The previous prime is 49847599. The next prime is 49847669. The reversal of 49847639 is 93674894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49847639 - 2²⁰ = 48799063 is a prime.

It is a super-2 number, since 2×49847639² = 4969574227748642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49847669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24923819 + 24923820.

It is an arithmetic number, because the mean of its divisors is an integer number (24923820).

Almost surely, 2^49847639 is an apocalyptic number.

49847639 is a deficient number, since it is larger than the sum of its proper divisors (1).

49847639 is an equidigital number, since it uses as much as digits as its factorization.

49847639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 49847639 is about 7060.2860423640. The cubic root of 49847639 is about 368.0285673121.

The spelling of 49847639 in words is "forty-nine million, eight hundred forty-seven thousand, six hundred thirty-nine".