390700769 has 2 divisors, whose sum is σ = 390700770. Its totient is φ = 390700768.

The previous prime is 390700757. The next prime is 390700811. The reversal of 390700769 is 967007093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197824225 + 192876544 = 14065^2 + 13888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390700769 is a prime.

It is a super-2 number, since 2×390700769² = 305294181794382722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_20866496 and since 390700769 and 20866496 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (390700969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195350384 + 195350385.

It is an arithmetic number, because the mean of its divisors is an integer number (195350385).

Almost surely, 2^390700769 is an apocalyptic number.

It is an amenable number.

390700769 is a deficient number, since it is larger than the sum of its proper divisors (1).

390700769 is an equidigital number, since it uses as much as digits as its factorization.

390700769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 390700769 is about 19766.1521040389. The cubic root of 390700769 is about 731.0516954763.

The spelling of 390700769 in words is "three hundred ninety million, seven hundred thousand, seven hundred sixty-nine".