49149439 has 2 divisors, whose sum is σ = 49149440. Its totient is φ = 49149438.

The previous prime is 49149433. The next prime is 49149467. The reversal of 49149439 is 93494194.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49149439 - 2²³ = 40760831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49149395 and 49149404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49149433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24574719 + 24574720.

It is an arithmetic number, because the mean of its divisors is an integer number (24574720).

Almost surely, 2^49149439 is an apocalyptic number.

49149439 is a deficient number, since it is larger than the sum of its proper divisors (1).

49149439 is an equidigital number, since it uses as much as digits as its factorization.

49149439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 49149439 is about 7010.6660881831. Note that the first 3 decimals coincide. The cubic root of 49149439 is about 366.3021954988.

The spelling of 49149439 in words is "forty-nine million, one hundred forty-nine thousand, four hundred thirty-nine".