49669919 has 4 divisors (see below), whose sum is σ = 53490696. Its totient is φ = 45849144.

The previous prime is 49669913. The next prime is 49669943. The reversal of 49669919 is 91996694.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49669919 is a prime.

It is a super-2 number, since 2×49669919² = 4934201706933122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49669913) 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, 1910369 + ... + 1910394.

It is an arithmetic number, because the mean of its divisors is an integer number (13372674).

Almost surely, 2^49669919 is an apocalyptic number.

49669919 is a deficient number, since it is larger than the sum of its proper divisors (3820777).

49669919 is a wasteful number, since it uses less digits than its factorization.

49669919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820776.

The product of its digits is 944784, while the sum is 53.

The square root of 49669919 is about 7047.6889119767. The cubic root of 49669919 is about 367.5906734783.

The spelling of 49669919 in words is "forty-nine million, six hundred sixty-nine thousand, nine hundred nineteen".