139073493 has 16 divisors (see below), whose sum is σ = 200019456. Its totient is φ = 85444800.

The previous prime is 139073477. The next prime is 139073503. The reversal of 139073493 is 394370931.

It is not a de Polignac number, because 139073493 - 2⁴ = 139073477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139073453) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24796 + ... + 29882.

It is an arithmetic number, because the mean of its divisors is an integer number (12501216).

Almost surely, 2^139073493 is an apocalyptic number.

139073493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139073493 is a deficient number, since it is larger than the sum of its proper divisors (60945963).

139073493 is a wasteful number, since it uses less digits than its factorization.

139073493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804.

The product of its (nonzero) digits is 61236, while the sum is 39.

The square root of 139073493 is about 11792.9425081275. The cubic root of 139073493 is about 518.1014259038.

The spelling of 139073493 in words is "one hundred thirty-nine million, seventy-three thousand, four hundred ninety-three".