398045515 has 8 divisors (see below), whose sum is σ = 545891040. Its totient is φ = 272945472.

The previous prime is 398045477. The next prime is 398045569. The reversal of 398045515 is 515540893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398045515 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5686330 + ... + 5686399.

It is an arithmetic number, because the mean of its divisors is an integer number (68236380).

Almost surely, 2^398045515 is an apocalyptic number.

398045515 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

398045515 is a deficient number, since it is larger than the sum of its proper divisors (147845525).

398045515 is a wasteful number, since it uses less digits than its factorization.

398045515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11372741.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 398045515 is about 19951.0780410483. The cubic root of 398045515 is about 735.6042757650.

The spelling of 398045515 in words is "three hundred ninety-eight million, forty-five thousand, five hundred fifteen".