49479797 has 4 divisors (see below), whose sum is σ = 49989996. Its totient is φ = 48969600.

The previous prime is 49479779. The next prime is 49479811. The reversal of 49479797 is 79797494.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12013156 + 37466641 = 3466^2 + 6121^2 .

It is a cyclic number.

It is not a de Polignac number, because 49479797 - 2⁶ = 49479733 is a prime.

It is a super-2 number, since 2×49479797² = 4896500622322418, which contains 22 as substring.

It is a Duffinian number.

49479797 is a modest number, since divided by 9797 gives 4947 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49479737) 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, 254954 + ... + 255147.

It is an arithmetic number, because the mean of its divisors is an integer number (12497499).

Almost surely, 2^49479797 is an apocalyptic number.

It is an amenable number.

49479797 is a deficient number, since it is larger than the sum of its proper divisors (510199).

49479797 is an equidigital number, since it uses as much as digits as its factorization.

49479797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510198.

The product of its digits is 4000752, while the sum is 56.

The square root of 49479797 is about 7034.1877285156. The cubic root of 49479797 is about 367.1210637382.

The spelling of 49479797 in words is "forty-nine million, four hundred seventy-nine thousand, seven hundred ninety-seven".