49713981 has 8 divisors (see below), whose sum is σ = 66619200. Its totient is φ = 32975712.

The previous prime is 49713959. The next prime is 49713991. The reversal of 49713981 is 18931794.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49713981 - 2¹⁵ = 49681213 is a prime.

It is a super-2 number, since 2×49713981² = 4942959813736722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49713941) 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, 41040 + ... + 42233.

It is an arithmetic number, because the mean of its divisors is an integer number (8327400).

Almost surely, 2^49713981 is an apocalyptic number.

It is an amenable number.

49713981 is a deficient number, since it is larger than the sum of its proper divisors (16905219).

49713981 is a wasteful number, since it uses less digits than its factorization.

49713981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83475.

The product of its digits is 54432, while the sum is 42.

The square root of 49713981 is about 7050.8142083025. The cubic root of 49713981 is about 367.6993374582.

The spelling of 49713981 in words is "forty-nine million, seven hundred thirteen thousand, nine hundred eighty-one".