49347981 has 8 divisors (see below), whose sum is σ = 73108160. Its totient is φ = 32898636.

The previous prime is 49347971. The next prime is 49347983. The reversal of 49347981 is 18974394.

It is not a de Polignac number, because 49347981 - 2⁷ = 49347853 is a prime.

It is a super-2 number, since 2×49347981² = 4870446457552722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49347983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913825 + ... + 913878.

It is an arithmetic number, because the mean of its divisors is an integer number (9138520).

Almost surely, 2^49347981 is an apocalyptic number.

It is an amenable number.

49347981 is a deficient number, since it is larger than the sum of its proper divisors (23760179).

49347981 is a wasteful number, since it uses less digits than its factorization.

49347981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827712 (or 1827706 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 49347981 is about 7024.8118124260. The cubic root of 49347981 is about 366.7947658021.

The spelling of 49347981 in words is "forty-nine million, three hundred forty-seven thousand, nine hundred eighty-one".