40338847886979 has 16 divisors (see below), whose sum is σ = 53978187504384. Its totient is φ = 26796101234400.

The previous prime is 40338847886963. The next prime is 40338847887059. The reversal of 40338847886979 is 97968874883304.

It is not a de Polignac number, because 40338847886979 - 2⁴ = 40338847886963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40338847886929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5554092 + ... + 10560569.

It is an arithmetic number, because the mean of its divisors is an integer number (3373636719024).

Almost surely, 2^{40338847886979} is an apocalyptic number.

40338847886979 is a deficient number, since it is larger than the sum of its proper divisors (13639339617405).

40338847886979 is a wasteful number, since it uses less digits than its factorization.

40338847886979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16117658.

The product of its (nonzero) digits is 14046068736, while the sum is 84.

The spelling of 40338847886979 in words is "forty trillion, three hundred thirty-eight billion, eight hundred forty-seven million, eight hundred eighty-six thousand, nine hundred seventy-nine".