398620943 has 16 divisors (see below), whose sum is σ = 473163840. Its totient is φ = 328686336.

The previous prime is 398620927. The next prime is 398620967. The reversal of 398620943 is 349026893.

It is a cyclic number.

It is not a de Polignac number, because 398620943 - 2⁴ = 398620927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 398620894 and 398620903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398628943) 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, 14405 + ... + 31697.

It is an arithmetic number, because the mean of its divisors is an integer number (29572740).

Almost surely, 2^398620943 is an apocalyptic number.

398620943 is a deficient number, since it is larger than the sum of its proper divisors (74542897).

398620943 is a wasteful number, since it uses less digits than its factorization.

398620943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17426.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 398620943 is about 19965.4938080680. The cubic root of 398620943 is about 735.9585765272.

The spelling of 398620943 in words is "three hundred ninety-eight million, six hundred twenty thousand, nine hundred forty-three".