390845001 has 4 divisors (see below), whose sum is σ = 521126672. Its totient is φ = 260563332.

The previous prime is 390844967. The next prime is 390845041. The reversal of 390845001 is 100548093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 390845001 - 2¹⁰ = 390843977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 390845001.

It is not an unprimeable number, because it can be changed into a prime (390845041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65140831 + ... + 65140836.

It is an arithmetic number, because the mean of its divisors is an integer number (130281668).

Almost surely, 2^390845001 is an apocalyptic number.

It is an amenable number.

390845001 is a deficient number, since it is larger than the sum of its proper divisors (130281671).

390845001 is a wasteful number, since it uses less digits than its factorization.

390845001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130281670.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 390845001 is about 19769.8002266083. The cubic root of 390845001 is about 731.1416433206.

The spelling of 390845001 in words is "three hundred ninety million, eight hundred forty-five thousand, one".