49662139 has 2 divisors, whose sum is σ = 49662140. Its totient is φ = 49662138.

The previous prime is 49662133. The next prime is 49662149. The reversal of 49662139 is 93126694.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49662139 - 2³ = 49662131 is a prime.

It is not a weakly prime, because it can be changed into another prime (49662131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24831069 + 24831070.

It is an arithmetic number, because the mean of its divisors is an integer number (24831070).

Almost surely, 2^49662139 is an apocalyptic number.

49662139 is a deficient number, since it is larger than the sum of its proper divisors (1).

49662139 is an equidigital number, since it uses as much as digits as its factorization.

49662139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 49662139 is about 7047.1369363735. The cubic root of 49662139 is about 367.5714800722.

The spelling of 49662139 in words is "forty-nine million, six hundred sixty-two thousand, one hundred thirty-nine".