49347781 has 16 divisors (see below), whose sum is σ = 57542400. Its totient is φ = 41447808.

The previous prime is 49347773. The next prime is 49347799. The reversal of 49347781 is 18774394.

It is a cyclic number.

It is not a de Polignac number, because 49347781 - 2³ = 49347773 is a prime.

It is a super-2 number, since 2×49347781² = 4870406979247922, 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 (49347721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137280 + ... + 137638.

It is an arithmetic number, because the mean of its divisors is an integer number (3596400).

Almost surely, 2^49347781 is an apocalyptic number.

It is an amenable number.

49347781 is a deficient number, since it is larger than the sum of its proper divisors (8194619).

49347781 is a wasteful number, since it uses less digits than its factorization.

49347781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its digits is 169344, while the sum is 43.

The square root of 49347781 is about 7024.7975771548. The cubic root of 49347781 is about 366.7942702799.

The spelling of 49347781 in words is "forty-nine million, three hundred forty-seven thousand, seven hundred eighty-one".