398878097345 has 64 divisors (see below), whose sum is σ = 592541429760. Its totient is φ = 251010309888.

The previous prime is 398878097339. The next prime is 398878097399. The reversal of 398878097345 is 543790878893.

It is not a de Polignac number, because 398878097345 - 2¹² = 398878093249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86653814 + ... + 86658416.

It is an arithmetic number, because the mean of its divisors is an integer number (9258459840).

Almost surely, 2^398878097345 is an apocalyptic number.

398878097345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398878097345 is a deficient number, since it is larger than the sum of its proper divisors (193663332415).

398878097345 is a wasteful number, since it uses less digits than its factorization.

398878097345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694.

The product of its (nonzero) digits is 365783040, while the sum is 71.

The spelling of 398878097345 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-seven thousand, three hundred forty-five".