139534907 has 4 divisors (see below), whose sum is σ = 139657080. Its totient is φ = 139412736.

The previous prime is 139534897. The next prime is 139534939. The reversal of 139534907 is 709435931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709435931 = 4423 ⋅160397.

It is a cyclic number.

It is not a de Polignac number, because 139534907 - 2¹⁴ = 139518523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139534607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59357 + ... + 61662.

It is an arithmetic number, because the mean of its divisors is an integer number (34914270).

Almost surely, 2^139534907 is an apocalyptic number.

139534907 is a deficient number, since it is larger than the sum of its proper divisors (122173).

139534907 is a wasteful number, since it uses less digits than its factorization.

139534907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122172.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 139534907 is about 11812.4894497307. The cubic root of 139534907 is about 518.6737740226.

The spelling of 139534907 in words is "one hundred thirty-nine million, five hundred thirty-four thousand, nine hundred seven".