49726639 has 2 divisors, whose sum is σ = 49726640. Its totient is φ = 49726638.

The previous prime is 49726637. The next prime is 49726657. The reversal of 49726639 is 93662794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49726639 - 2¹ = 49726637 is a prime.

Together with 49726637, 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 (49726637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24863319 + 24863320.

It is an arithmetic number, because the mean of its divisors is an integer number (24863320).

Almost surely, 2^49726639 is an apocalyptic number.

49726639 is a deficient number, since it is larger than the sum of its proper divisors (1).

49726639 is an equidigital number, since it uses as much as digits as its factorization.

49726639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 49726639 is about 7051.7117780011. The cubic root of 49726639 is about 367.7305422498.

It can be divided in two parts, 4972 and 6639, that added together give a palindrome (11611).

The spelling of 49726639 in words is "forty-nine million, seven hundred twenty-six thousand, six hundred thirty-nine".