139901187 has 16 divisors (see below), whose sum is σ = 191116800. Its totient is φ = 90989472.

The previous prime is 139901149. The next prime is 139901219. The reversal of 139901187 is 781109931.

It is not a de Polignac number, because 139901187 - 2¹¹ = 139899139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139901987) 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, 47788 + ... + 50630.

It is an arithmetic number, because the mean of its divisors is an integer number (11944800).

Almost surely, 2^139901187 is an apocalyptic number.

139901187 is a deficient number, since it is larger than the sum of its proper divisors (51215613).

139901187 is a wasteful number, since it uses less digits than its factorization.

139901187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242.

The product of its (nonzero) digits is 13608, while the sum is 39.

The square root of 139901187 is about 11827.9832177764. The cubic root of 139901187 is about 519.1272181184.

The spelling of 139901187 in words is "one hundred thirty-nine million, nine hundred one thousand, one hundred eighty-seven".