38404137432979 has 2 divisors, whose sum is σ = 38404137432980. Its totient is φ = 38404137432978.

The previous prime is 38404137432967. The next prime is 38404137432989. The reversal of 38404137432979 is 97923473140483.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38404137432979 - 2¹³ = 38404137424787 is a prime.

It is a super-2 number, since 2×38404137432979² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38404137432979.

It is not a weakly prime, because it can be changed into another prime (38404137432949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19202068716489 + 19202068716490.

It is an arithmetic number, because the mean of its divisors is an integer number (19202068716490).

Almost surely, 2^{38404137432979} is an apocalyptic number.

38404137432979 is a deficient number, since it is larger than the sum of its proper divisors (1).

38404137432979 is an equidigital number, since it uses as much as digits as its factorization.

38404137432979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109734912, while the sum is 64.

The spelling of 38404137432979 in words is "thirty-eight trillion, four hundred four billion, one hundred thirty-seven million, four hundred thirty-two thousand, nine hundred seventy-nine".