139866159 has 16 divisors (see below), whose sum is σ = 193223520. Its totient is φ = 89886720.

The previous prime is 139866131. The next prime is 139866193. The reversal of 139866159 is 951668931.

It is not a de Polignac number, because 139866159 - 2¹⁵ = 139833391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139866359) 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, 105219 + ... + 106539.

It is an arithmetic number, because the mean of its divisors is an integer number (12076470).

Almost surely, 2^139866159 is an apocalyptic number.

139866159 is a deficient number, since it is larger than the sum of its proper divisors (53357361).

139866159 is a wasteful number, since it uses less digits than its factorization.

139866159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570.

The product of its digits is 349920, while the sum is 48.

The square root of 139866159 is about 11826.5023992726. The cubic root of 139866159 is about 519.0838887123.

The spelling of 139866159 in words is "one hundred thirty-nine million, eight hundred sixty-six thousand, one hundred fifty-nine".