398572495 has 4 divisors (see below), whose sum is σ = 478287000. Its totient is φ = 318857992.

The previous prime is 398572483. The next prime is 398572511. The reversal of 398572495 is 594275893.

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

It is a cyclic number.

It is not a de Polignac number, because 398572495 - 2⁹ = 398571983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39857245 + ... + 39857254.

It is an arithmetic number, because the mean of its divisors is an integer number (119571750).

Almost surely, 2^398572495 is an apocalyptic number.

398572495 is a deficient number, since it is larger than the sum of its proper divisors (79714505).

398572495 is an equidigital number, since it uses as much as digits as its factorization.

398572495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79714504.

The product of its digits is 2721600, while the sum is 52.

The square root of 398572495 is about 19964.2804778935. The cubic root of 398572495 is about 735.9287594237.

The spelling of 398572495 in words is "three hundred ninety-eight million, five hundred seventy-two thousand, four hundred ninety-five".