117780139 has 16 divisors (see below), whose sum is σ = 124764640. Its totient is φ = 111041280.

The previous prime is 117780137. The next prime is 117780149. The reversal of 117780139 is 931087711.

It is a cyclic number.

It is not a de Polignac number, because 117780139 - 2¹ = 117780137 is a prime.

It is a super-2 number, since 2×117780139² = 27744322285718642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117780098 and 117780107.

It is not an unprimeable number, because it can be changed into a prime (117780137) 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, 287767 + ... + 288175.

It is an arithmetic number, because the mean of its divisors is an integer number (7797790).

Almost surely, 2^117780139 is an apocalyptic number.

117780139 is a deficient number, since it is larger than the sum of its proper divisors (6984501).

117780139 is a wasteful number, since it uses less digits than its factorization.

117780139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670.

The product of its (nonzero) digits is 10584, while the sum is 37.

The square root of 117780139 is about 10852.6558500673. The cubic root of 117780139 is about 490.1819940370.

The spelling of 117780139 in words is "one hundred seventeen million, seven hundred eighty thousand, one hundred thirty-nine".