139973303 has 4 divisors (see below), whose sum is σ = 143387328. Its totient is φ = 136559280.

The previous prime is 139973263. The next prime is 139973321. The reversal of 139973303 is 303379931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303379931 = 3323 ⋅91297.

It is a cyclic number.

It is not a de Polignac number, because 139973303 - 2²⁰ = 138924727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139973333) 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, 1706951 + ... + 1707032.

It is an arithmetic number, because the mean of its divisors is an integer number (35846832).

Almost surely, 2^139973303 is an apocalyptic number.

139973303 is a deficient number, since it is larger than the sum of its proper divisors (3414025).

139973303 is an equidigital number, since it uses as much as digits as its factorization.

139973303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414024.

The product of its (nonzero) digits is 45927, while the sum is 38.

The square root of 139973303 is about 11831.0313582544. The cubic root of 139973303 is about 519.2164023690.

The spelling of 139973303 in words is "one hundred thirty-nine million, nine hundred seventy-three thousand, three hundred three".