390945742291 has 8 divisors (see below), whose sum is σ = 432397370384. Its totient is φ = 351119668320.

The previous prime is 390945742267. The next prime is 390945742339. The reversal of 390945742291 is 192247549093.

It is a happy number.

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 390945742291 - 2⁵ = 390945742259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390945742211) 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, 406388025 + ... + 406388986.

It is an arithmetic number, because the mean of its divisors is an integer number (54049671298).

Almost surely, 2^390945742291 is an apocalyptic number.

390945742291 is a deficient number, since it is larger than the sum of its proper divisors (41451628093).

390945742291 is a wasteful number, since it uses less digits than its factorization.

390945742291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812777061.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 390945742291 in words is "three hundred ninety billion, nine hundred forty-five million, seven hundred forty-two thousand, two hundred ninety-one".