139073390 has 16 divisors (see below), whose sum is σ = 251240832. Its totient is φ = 55427424.

The previous prime is 139073377. The next prime is 139073401. The reversal of 139073390 is 93370931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 139073390.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22334 + ... + 27873.

It is an arithmetic number, because the mean of its divisors is an integer number (15702552).

Almost surely, 2^139073390 is an apocalyptic number.

139073390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139073390 is a deficient number, since it is larger than the sum of its proper divisors (112167442).

139073390 is a wasteful number, since it uses less digits than its factorization.

139073390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50491.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 139073390 is about 11792.9381411080. The cubic root of 139073390 is about 518.1012979991.

The spelling of 139073390 in words is "one hundred thirty-nine million, seventy-three thousand, three hundred ninety".