399248325 has 72 divisors (see below), whose sum is σ = 853248960. Its totient is φ = 182498400.

The previous prime is 399248299. The next prime is 399248357. The reversal of 399248325 is 523842993.

It is a happy number.

It is not a de Polignac number, because 399248325 - 2⁶ = 399248261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 27040 + ... + 39110.

It is an arithmetic number, because the mean of its divisors is an integer number (11850680).

Almost surely, 2^399248325 is an apocalyptic number.

399248325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

399248325 is an abundant number, since it is smaller than the sum of its proper divisors (454000635).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399248325 is a wasteful number, since it uses less digits than its factorization.

399248325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12104 (or 12086 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 399248325 is about 19981.1992883310. The cubic root of 399248325 is about 736.3444779278.

The spelling of 399248325 in words is "three hundred ninety-nine million, two hundred forty-eight thousand, three hundred twenty-five".