49969811 has 4 divisors (see below), whose sum is σ = 49985832. Its totient is φ = 49953792.

The previous prime is 49969807. The next prime is 49969837. The reversal of 49969811 is 11896994.

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

It is a cyclic number.

It is not a de Polignac number, because 49969811 - 2² = 49969807 is a prime.

It is a super-2 number, since 2×49969811² = 4993964022751442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49969891) 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, 1646 + ... + 10131.

It is an arithmetic number, because the mean of its divisors is an integer number (12496458).

Almost surely, 2^49969811 is an apocalyptic number.

49969811 is a deficient number, since it is larger than the sum of its proper divisors (16021).

49969811 is a wasteful number, since it uses less digits than its factorization.

49969811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16020.

The product of its digits is 139968, while the sum is 47.

The square root of 49969811 is about 7068.9328048865. The cubic root of 49969811 is about 368.3289901187.

The spelling of 49969811 in words is "forty-nine million, nine hundred sixty-nine thousand, eight hundred eleven".