49407881 has 2 divisors, whose sum is σ = 49407882. Its totient is φ = 49407880.

The previous prime is 49407863. The next prime is 49407889. The reversal of 49407881 is 18870494.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25593481 + 23814400 = 5059^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 49407881 - 2¹⁰ = 49406857 is a prime.

It is a super-2 number, since 2×49407881² = 4882277409820322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49407889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24703940 + 24703941.

It is an arithmetic number, because the mean of its divisors is an integer number (24703941).

Almost surely, 2^49407881 is an apocalyptic number.

It is an amenable number.

49407881 is a deficient number, since it is larger than the sum of its proper divisors (1).

49407881 is an equidigital number, since it uses as much as digits as its factorization.

49407881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 49407881 is about 7029.0739788396. The cubic root of 49407881 is about 366.9431144770.

It can be divided in two parts, 4940 and 7881, that added together give a palindrome (12821).

The spelling of 49407881 in words is "forty-nine million, four hundred seven thousand, eight hundred eighty-one".