116439381 has 12 divisors (see below), whose sum is σ = 169680108. Its totient is φ = 76938624.

The previous prime is 116439377. The next prime is 116439397. The reversal of 116439381 is 183934611.

116439381 is a `hidden beast` number, since 1 + 1 + 643 + 9 + 3 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8071281 + 108368100 = 2841^2 + 10410^2 .

It is not a de Polignac number, because 116439381 - 2² = 116439377 is a prime.

It is a super-2 number, since 2×116439381² = 27116258895326322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116439311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56230 + ... + 58263.

It is an arithmetic number, because the mean of its divisors is an integer number (14140009).

Almost surely, 2^116439381 is an apocalyptic number.

It is an amenable number.

116439381 is a deficient number, since it is larger than the sum of its proper divisors (53240727).

116439381 is a wasteful number, since it uses less digits than its factorization.

116439381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114612 (or 114609 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 116439381 is about 10790.7080861267. The cubic root of 116439381 is about 488.3148848450.

The spelling of 116439381 in words is "one hundred sixteen million, four hundred thirty-nine thousand, three hundred eighty-one".