1293912939 has 32 divisors (see below), whose sum is σ = 1990056960. Its totient is φ = 739562400.

The previous prime is 1293912931. The next prime is 1293912943. The reversal of 1293912939 is 9392193921.

It is not a de Polignac number, because 1293912939 - 2³ = 1293912931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1293912931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137784 + ... + 146874.

It is an arithmetic number, because the mean of its divisors is an integer number (62189280).

Almost surely, 2^1293912939 is an apocalyptic number.

1293912939 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1293912939 is a deficient number, since it is larger than the sum of its proper divisors (696144021).

1293912939 is a wasteful number, since it uses less digits than its factorization.

1293912939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9351.

The product of its digits is 236196, while the sum is 48.

The square root of 1293912939 is about 35971.0013622084. The cubic root of 1293912939 is about 1089.6867879353.

It can be divided in two parts, 12939 and 12939, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 1293912939 in words is "one billion, two hundred ninety-three million, nine hundred twelve thousand, nine hundred thirty-nine".