390754069 has 2 divisors, whose sum is σ = 390754070. Its totient is φ = 390754068.

The previous prime is 390754051. The next prime is 390754073. The reversal of 390754069 is 960457093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289510225 + 101243844 = 17015^2 + 10062^2 .

It is a cyclic number.

It is not a de Polignac number, because 390754069 - 2⁹ = 390753557 is a prime.

It is a super-2 number, since 2×390754069² = 305377484880113522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390754009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195377034 + 195377035.

It is an arithmetic number, because the mean of its divisors is an integer number (195377035).

Almost surely, 2^390754069 is an apocalyptic number.

It is an amenable number.

390754069 is a deficient number, since it is larger than the sum of its proper divisors (1).

390754069 is an equidigital number, since it uses as much as digits as its factorization.

390754069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 390754069 is about 19767.5003224990. The cubic root of 390754069 is about 731.0849376970.

The spelling of 390754069 in words is "three hundred ninety million, seven hundred fifty-four thousand, sixty-nine".