139987827 has 24 divisors (see below), whose sum is σ = 231402080. Its totient is φ = 79885440.

The previous prime is 139987811. The next prime is 139987831. The reversal of 139987827 is 728789931.

It is not a de Polignac number, because 139987827 - 2⁴ = 139987811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139987807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86199 + ... + 87807.

Almost surely, 2^139987827 is an apocalyptic number.

139987827 is a deficient number, since it is larger than the sum of its proper divisors (91414253).

139987827 is a wasteful number, since it uses less digits than its factorization.

139987827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003 (or 3000 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 139987827 is about 11831.6451518798. The cubic root of 139987827 is about 519.2343601702.

The spelling of 139987827 in words is "one hundred thirty-nine million, nine hundred eighty-seven thousand, eight hundred twenty-seven".