390125504449 has 4 divisors (see below), whose sum is σ = 394147416964. Its totient is φ = 386103591936.

The previous prime is 390125504443. The next prime is 390125504459. The reversal of 390125504449 is 944405521093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944405521093 = 79 ⋅11954500267.

It can be written as a sum of positive squares in 2 ways, for example, as 167582159424 + 222543345025 = 409368^2 + 471745^2 .

It is a cyclic number.

It is not a de Polignac number, because 390125504449 - 2¹⁷ = 390125373377 is a prime.

It is a super-3 number, since 3×390125504449³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 390125504399 and 390125504408.

It is not an unprimeable number, because it can be changed into a prime (390125504443) 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, 2010956112 + ... + 2010956305.

It is an arithmetic number, because the mean of its divisors is an integer number (98536854241).

Almost surely, 2^390125504449 is an apocalyptic number.

It is an amenable number.

390125504449 is a deficient number, since it is larger than the sum of its proper divisors (4021912515).

390125504449 is an equidigital number, since it uses as much as digits as its factorization.

390125504449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021912514.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 390125504449 in words is "three hundred ninety billion, one hundred twenty-five million, five hundred four thousand, four hundred forty-nine".