49915669 has 4 divisors (see below), whose sum is σ = 49965580. Its totient is φ = 49865760.

The previous prime is 49915667. The next prime is 49915687. The reversal of 49915669 is 96651994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96651994 = 2 ⋅48325997.

It can be written as a sum of positive squares in 2 ways, for example, as 29322225 + 20593444 = 5415^2 + 4538^2 .

It is a cyclic number.

It is not a de Polignac number, because 49915669 - 2¹ = 49915667 is a prime.

It is a super-2 number, since 2×49915669² = 4983148023435122, 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 (49915661) 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, 23424 + ... + 25465.

It is an arithmetic number, because the mean of its divisors is an integer number (12491395).

Almost surely, 2^49915669 is an apocalyptic number.

It is an amenable number.

49915669 is a deficient number, since it is larger than the sum of its proper divisors (49911).

49915669 is a wasteful number, since it uses less digits than its factorization.

49915669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49910.

The product of its digits is 524880, while the sum is 49.

The square root of 49915669 is about 7065.1021931746. The cubic root of 49915669 is about 368.1959146044.

The spelling of 49915669 in words is "forty-nine million, nine hundred fifteen thousand, six hundred sixty-nine".