139074385 has 16 divisors (see below), whose sum is σ = 172113984. Its totient is φ = 107828032.

The previous prime is 139074367. The next prime is 139074389. The reversal of 139074385 is 583470931.

It is a cyclic number.

It is not a de Polignac number, because 139074385 - 2¹⁷ = 138943313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139074389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18834 + ... + 25156.

It is an arithmetic number, because the mean of its divisors is an integer number (10757124).

Almost surely, 2^139074385 is an apocalyptic number.

It is an amenable number.

139074385 is a deficient number, since it is larger than the sum of its proper divisors (33039599).

139074385 is an equidigital number, since it uses as much as digits as its factorization.

139074385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6464.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 139074385 is about 11792.9803272964. The cubic root of 139074385 is about 518.1025335807.

The spelling of 139074385 in words is "one hundred thirty-nine million, seventy-four thousand, three hundred eighty-five".