49399997 has 4 divisors (see below), whose sum is σ = 49530720. Its totient is φ = 49269276.

The previous prime is 49399979. The next prime is 49400003. The reversal of 49399997 is 79999394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49399997 - 2¹² = 49395901 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 (49399937) 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, 64793 + ... + 65550.

It is an arithmetic number, because the mean of its divisors is an integer number (12382680).

Almost surely, 2^49399997 is an apocalyptic number.

It is an amenable number.

49399997 is a deficient number, since it is larger than the sum of its proper divisors (130723).

49399997 is a wasteful number, since it uses less digits than its factorization.

49399997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130722.

The product of its digits is 4960116, while the sum is 59.

The square root of 49399997 is about 7028.5131429058. The cubic root of 49399997 is about 366.9235957731.

The spelling of 49399997 in words is "forty-nine million, three hundred ninety-nine thousand, nine hundred ninety-seven".