398878098077 has 16 divisors (see below), whose sum is σ = 414666584640. Its totient is φ = 383430523392.

The previous prime is 398878098037. The next prime is 398878098097. The reversal of 398878098077 is 770890878893.

It is a cyclic number.

It is not a de Polignac number, because 398878098077 - 2⁶ = 398878098013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398878097995 and 398878098013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398878098037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479483 + ... + 1013735.

It is an arithmetic number, because the mean of its divisors is an integer number (25916661540).

Almost surely, 2^398878098077 is an apocalyptic number.

It is an amenable number.

398878098077 is a deficient number, since it is larger than the sum of its proper divisors (15788486563).

398878098077 is a wasteful number, since it uses less digits than its factorization.

398878098077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534572.

The product of its (nonzero) digits is 341397504, while the sum is 74.

The spelling of 398878098077 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-eight thousand, seventy-seven".