390717029 has 4 divisors (see below), whose sum is σ = 404190060. Its totient is φ = 377244000.

The previous prime is 390717023. The next prime is 390717043. The reversal of 390717029 is 920717093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180176929 + 210540100 = 13423^2 + 14510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390717029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390716983 and 390717001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390717023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6736472 + ... + 6736529.

It is an arithmetic number, because the mean of its divisors is an integer number (101047515).

Almost surely, 2^390717029 is an apocalyptic number.

It is an amenable number.

390717029 is a deficient number, since it is larger than the sum of its proper divisors (13473031).

390717029 is a wasteful number, since it uses less digits than its factorization.

390717029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13473030.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 390717029 is about 19766.5634089490. The cubic root of 390717029 is about 731.0618368570.

The spelling of 390717029 in words is "three hundred ninety million, seven hundred seventeen thousand, twenty-nine".