139787601 has 8 divisors (see below), whose sum is σ = 186444384. Its totient is φ = 93161280.

The previous prime is 139787597. The next prime is 139787603. The reversal of 139787601 is 106787931.

139787601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139787601 - 2² = 139787597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139787603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7230 + ... + 18216.

It is an arithmetic number, because the mean of its divisors is an integer number (23305548).

Almost surely, 2^139787601 is an apocalyptic number.

It is an amenable number.

139787601 is a deficient number, since it is larger than the sum of its proper divisors (46656783).

139787601 is a wasteful number, since it uses less digits than its factorization.

139787601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15231.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 139787601 is about 11823.1806634256. The cubic root of 139787601 is about 518.9866866696.

The spelling of 139787601 in words is "one hundred thirty-nine million, seven hundred eighty-seven thousand, six hundred one".