390525049 has 4 divisors (see below), whose sum is σ = 403991460. Its totient is φ = 377058640.

The previous prime is 390525013. The next prime is 390525053. The reversal of 390525049 is 940525093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279959824 + 110565225 = 16732^2 + 10515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390525049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390524999 and 390525017.

It is not an unprimeable number, because it can be changed into a prime (390535049) 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, 6733162 + ... + 6733219.

It is an arithmetic number, because the mean of its divisors is an integer number (100997865).

Almost surely, 2^390525049 is an apocalyptic number.

It is an amenable number.

390525049 is a deficient number, since it is larger than the sum of its proper divisors (13466411).

390525049 is a wasteful number, since it uses less digits than its factorization.

390525049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13466410.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 390525049 is about 19761.7066317664. The cubic root of 390525049 is about 730.9420807553.

The spelling of 390525049 in words is "three hundred ninety million, five hundred twenty-five thousand, forty-nine".