390456227745 has 24 divisors (see below), whose sum is σ = 683491701672. Its totient is φ = 206181504000.

The previous prime is 390456227741. The next prime is 390456227753. The reversal of 390456227745 is 547722654093.

390456227745 is a `hidden beast` number, since 3 + 9 + 0 + 4 + 5 + 622 + 7 + 7 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 165105694224 + 225350533521 = 406332^2 + 474711^2 .

It is not a de Polignac number, because 390456227745 - 2² = 390456227741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390456227691 and 390456227700.

It is not an unprimeable number, because it can be changed into a prime (390456227741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42949936 + ... + 42959025.

It is an arithmetic number, because the mean of its divisors is an integer number (28478820903).

Almost surely, 2^390456227745 is an apocalyptic number.

It is an amenable number.

390456227745 is a deficient number, since it is larger than the sum of its proper divisors (293035473927).

390456227745 is a wasteful number, since it uses less digits than its factorization.

390456227745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85909073 (or 85909070 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 390456227745 in words is "three hundred ninety billion, four hundred fifty-six million, two hundred twenty-seven thousand, seven hundred forty-five".