390769073 has 16 divisors (see below), whose sum is σ = 409174416. Its totient is φ = 372879360.

The previous prime is 390769061. The next prime is 390769109. The reversal of 390769073 is 370967093.

It can be written as a sum of positive squares in 8 ways, for example, as 23203489 + 367565584 = 4817^2 + 19172^2 .

It is a cyclic number.

It is not a de Polignac number, because 390769073 - 2⁶ = 390769009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390769013) 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, 409565 + ... + 410517.

It is an arithmetic number, because the mean of its divisors is an integer number (25573401).

Almost surely, 2^390769073 is an apocalyptic number.

It is an amenable number.

390769073 is a deficient number, since it is larger than the sum of its proper divisors (18405343).

390769073 is a wasteful number, since it uses less digits than its factorization.

390769073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 390769073 is about 19767.8798306748. The cubic root of 390769073 is about 731.0942948681.

The spelling of 390769073 in words is "three hundred ninety million, seven hundred sixty-nine thousand, seventy-three".