390201641 has 8 divisors (see below), whose sum is σ = 404750280. Its totient is φ = 375725952.

The previous prime is 390201631. The next prime is 390201649. The reversal of 390201641 is 146102093.

It can be written as a sum of positive squares in 4 ways, for example, as 153041641 + 237160000 = 12371^2 + 15400^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390201641 - 2⁶ = 390201577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 390201641.

It is not an unprimeable number, because it can be changed into a prime (390201649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7220 + ... + 28853.

It is an arithmetic number, because the mean of its divisors is an integer number (50593785).

Almost surely, 2^390201641 is an apocalyptic number.

It is an amenable number.

390201641 is a deficient number, since it is larger than the sum of its proper divisors (14548639).

390201641 is a wasteful number, since it uses less digits than its factorization.

390201641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36475.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 390201641 is about 19753.5222428811. The cubic root of 390201641 is about 730.7402517884.

The spelling of 390201641 in words is "three hundred ninety million, two hundred one thousand, six hundred forty-one".