390424545 has 24 divisors (see below), whose sum is σ = 773413056. Its totient is φ = 178479648.

The previous prime is 390424519. The next prime is 390424547. The reversal of 390424545 is 545424093.

It is a happy number.

390424545 is a `hidden beast` number, since 3 + 90 + 4 + 24 + 545 = 666.

It is not a de Polignac number, because 390424545 - 2¹⁰ = 390423521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390424547) 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, 619407 + ... + 620036.

It is an arithmetic number, because the mean of its divisors is an integer number (32225544).

Almost surely, 2^390424545 is an apocalyptic number.

390424545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

390424545 is a deficient number, since it is larger than the sum of its proper divisors (382988511).

390424545 is a wasteful number, since it uses less digits than its factorization.

390424545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239461 (or 1239458 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 390424545 is about 19759.1635703539. The cubic root of 390424545 is about 730.8793712433.

The spelling of 390424545 in words is "three hundred ninety million, four hundred twenty-four thousand, five hundred forty-five".