49408842961 has 9 divisors (see below), whose sum is σ = 52150632681. Its totient is φ = 46804376484.

The previous prime is 49408842911. The next prime is 49408842979. The reversal of 49408842961 is 16924880494.

It is a happy number.

The square root of 49408842961 is 222281.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 49408842961 - 2¹⁵ = 49408810193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49408842911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4217490 + ... + 4229188.

Almost surely, 2^49408842961 is an apocalyptic number.

49408842961 is the 222281-st square number.

49408842961 is the 111141-st centered octagonal number.

It is an amenable number.

49408842961 is a deficient number, since it is larger than the sum of its proper divisors (2741789720).

49408842961 is an frugal number, since it uses more digits than its factorization.

49408842961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23436 (or 11718 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 49408842961 in words is "forty-nine billion, four hundred eight million, eight hundred forty-two thousand, nine hundred sixty-one".