49469813 has 4 divisors (see below), whose sum is σ = 52379820. Its totient is φ = 46559808.

The previous prime is 49469807. The next prime is 49469867. The reversal of 49469813 is 31896494.

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 38031889 + 11437924 = 6167^2 + 3382^2 .

It is a cyclic number.

It is not a de Polignac number, because 49469813 - 2¹⁰ = 49468789 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 (49469513) 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, 1454978 + ... + 1455011.

It is an arithmetic number, because the mean of its divisors is an integer number (13094955).

Almost surely, 2^49469813 is an apocalyptic number.

It is an amenable number.

49469813 is a deficient number, since it is larger than the sum of its proper divisors (2910007).

49469813 is a wasteful number, since it uses less digits than its factorization.

49469813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910006.

The product of its digits is 186624, while the sum is 44.

The square root of 49469813 is about 7033.4780158894. The cubic root of 49469813 is about 367.0963695971.

It can be divided in two parts, 494 and 69813, that added together give a palindrome (70307).

The spelling of 49469813 in words is "forty-nine million, four hundred sixty-nine thousand, eight hundred thirteen".