3129923493 has 12 divisors (see below), whose sum is σ = 4521619648. Its totient is φ = 2086329960.

The previous prime is 3129923491. The next prime is 3129923497. The reversal of 3129923493 is 3943299213.

It is not a de Polignac number, because 3129923493 - 2¹ = 3129923491 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129923491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61758 + ... + 100368.

Almost surely, 2^3129923493 is an apocalyptic number.

It is an amenable number.

3129923493 is a deficient number, since it is larger than the sum of its proper divisors (1391696155).

3129923493 is a wasteful number, since it uses less digits than its factorization.

3129923493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47624 (or 47621 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 3129923493 is about 55945.7191659916. The cubic root of 3129923493 is about 1462.7762732073.

The spelling of 3129923493 in words is "three billion, one hundred twenty-nine million, nine hundred twenty-three thousand, four hundred ninety-three".