49637279 has 2 divisors, whose sum is σ = 49637280. Its totient is φ = 49637278.

The previous prime is 49637261. The next prime is 49637281. The reversal of 49637279 is 97273694.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49637279 is a prime.

Together with 49637281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49637209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24818639 + 24818640.

It is an arithmetic number, because the mean of its divisors is an integer number (24818640).

Almost surely, 2^49637279 is an apocalyptic number.

49637279 is a deficient number, since it is larger than the sum of its proper divisors (1).

49637279 is an equidigital number, since it uses as much as digits as its factorization.

49637279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 47.

The square root of 49637279 is about 7045.3728787056. The cubic root of 49637279 is about 367.5101365461.

The spelling of 49637279 in words is "forty-nine million, six hundred thirty-seven thousand, two hundred seventy-nine".