139401935 has 4 divisors (see below), whose sum is σ = 167282328. Its totient is φ = 111521544.

The previous prime is 139401929. The next prime is 139401937. The reversal of 139401935 is 539104931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139401935 - 2¹⁴ = 139385551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139401895 and 139401904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139401937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13940189 + ... + 13940198.

It is an arithmetic number, because the mean of its divisors is an integer number (41820582).

Almost surely, 2^139401935 is an apocalyptic number.

139401935 is a deficient number, since it is larger than the sum of its proper divisors (27880393).

139401935 is an equidigital number, since it uses as much as digits as its factorization.

139401935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27880392.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 139401935 is about 11806.8596586899. The cubic root of 139401935 is about 518.5089621951.

The spelling of 139401935 in words is "one hundred thirty-nine million, four hundred one thousand, nine hundred thirty-five".