3909492797438 has 16 divisors (see below), whose sum is σ = 5991528411360. Its totient is φ = 1912522131936.

The previous prime is 3909492797429. The next prime is 3909492797461. The reversal of 3909492797438 is 8347972949093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51329645 + ... + 51405752.

It is an arithmetic number, because the mean of its divisors is an integer number (374470525710).

Almost surely, 2^{3909492797438} is an apocalyptic number.

3909492797438 is a deficient number, since it is larger than the sum of its proper divisors (2082035613922).

3909492797438 is a wasteful number, since it uses less digits than its factorization.

3909492797438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102735811.

The product of its (nonzero) digits is 740710656, while the sum is 74.

The spelling of 3909492797438 in words is "three trillion, nine hundred nine billion, four hundred ninety-two million, seven hundred ninety-seven thousand, four hundred thirty-eight".