49351391 has 4 divisors (see below), whose sum is σ = 52254432. Its totient is φ = 46448352.

The previous prime is 49351297. The next prime is 49351397. The reversal of 49351391 is 19315394.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 49351391 - 2¹⁸ = 49089247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49351397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451495 + ... + 1451528.

It is an arithmetic number, because the mean of its divisors is an integer number (13063608).

Almost surely, 2^49351391 is an apocalyptic number.

49351391 is a deficient number, since it is larger than the sum of its proper divisors (2903041).

49351391 is a wasteful number, since it uses less digits than its factorization.

49351391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903040.

The product of its digits is 14580, while the sum is 35.

The square root of 49351391 is about 7025.0545193614. The cubic root of 49351391 is about 366.8032142486.

The spelling of 49351391 in words is "forty-nine million, three hundred fifty-one thousand, three hundred ninety-one".