139726089 has 12 divisors (see below), whose sum is σ = 208786500. Its totient is φ = 89938464.

The previous prime is 139726087. The next prime is 139726117. The reversal of 139726089 is 980627931.

139726089 is a `hidden beast` number, since 1 + 39 + 7 + 2 + 608 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74649600 + 65076489 = 8640^2 + 8067^2 .

It is not a de Polignac number, because 139726089 - 2¹ = 139726087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139726087) 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, 267414 + ... + 267935.

It is an arithmetic number, because the mean of its divisors is an integer number (17398875).

Almost surely, 2^139726089 is an apocalyptic number.

It is an amenable number.

139726089 is a deficient number, since it is larger than the sum of its proper divisors (69060411).

139726089 is a wasteful number, since it uses less digits than its factorization.

139726089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535384 (or 535381 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 139726089 is about 11820.5790467303. The cubic root of 139726089 is about 518.9105507019.

The spelling of 139726089 in words is "one hundred thirty-nine million, seven hundred twenty-six thousand, eighty-nine".