49446139 has 2 divisors, whose sum is σ = 49446140. Its totient is φ = 49446138.

The previous prime is 49446121. The next prime is 49446167. The reversal of 49446139 is 93164494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49446139 - 2⁷ = 49446011 is a prime.

It is not a weakly prime, because it can be changed into another prime (49446169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24723069 + 24723070.

It is an arithmetic number, because the mean of its divisors is an integer number (24723070).

Almost surely, 2^49446139 is an apocalyptic number.

49446139 is a deficient number, since it is larger than the sum of its proper divisors (1).

49446139 is an equidigital number, since it uses as much as digits as its factorization.

49446139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 49446139 is about 7031.7948633333. The cubic root of 49446139 is about 367.0378017177.

The spelling of 49446139 in words is "forty-nine million, four hundred forty-six thousand, one hundred thirty-nine".