390108769 has 2 divisors, whose sum is σ = 390108770. Its totient is φ = 390108768.

The previous prime is 390108751. The next prime is 390108787. The reversal of 390108769 is 967801093.

It is a balanced prime because it is at equal distance from previous prime (390108751) and next prime (390108787).

It can be written as a sum of positive squares in only one way, i.e., 291999744 + 98109025 = 17088^2 + 9905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390108769 is a prime.

It is a super-2 number, since 2×390108769² = 304369703301390722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (390108709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195054384 + 195054385.

It is an arithmetic number, because the mean of its divisors is an integer number (195054385).

Almost surely, 2^390108769 is an apocalyptic number.

It is an amenable number.

390108769 is a deficient number, since it is larger than the sum of its proper divisors (1).

390108769 is an equidigital number, since it uses as much as digits as its factorization.

390108769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 390108769 is about 19751.1713323539. The cubic root of 390108769 is about 730.6822726254.

The spelling of 390108769 in words is "three hundred ninety million, one hundred eight thousand, seven hundred sixty-nine".