139683401 has 24 divisors (see below), whose sum is σ = 170760960. Its totient is φ = 113131200.

The previous prime is 139683377. The next prime is 139683403. The reversal of 139683401 is 104386931.

It is not a de Polignac number, because 139683401 - 2⁶ = 139683337 is a prime.

It is a super-2 number, since 2×139683401² = 39022905029853602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139683403) 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, 52616 + ... + 55206.

It is an arithmetic number, because the mean of its divisors is an integer number (7115040).

Almost surely, 2^139683401 is an apocalyptic number.

139683401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

139683401 is a deficient number, since it is larger than the sum of its proper divisors (31077559).

139683401 is a wasteful number, since it uses less digits than its factorization.

139683401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 139683401 is about 11818.7732442923. The cubic root of 139683401 is about 518.8577008489.

The spelling of 139683401 in words is "one hundred thirty-nine million, six hundred eighty-three thousand, four hundred one".