398837089 has 8 divisors (see below), whose sum is σ = 475632000. Its totient is φ = 326996736.

The previous prime is 398837081. The next prime is 398837099. The reversal of 398837089 is 980738893.

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

It is a cyclic number.

It is not a de Polignac number, because 398837089 - 2³ = 398837081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (398837081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238464 + ... + 1238785.

It is an arithmetic number, because the mean of its divisors is an integer number (59454000).

Almost surely, 2^398837089 is an apocalyptic number.

It is an amenable number.

398837089 is a deficient number, since it is larger than the sum of its proper divisors (76794911).

398837089 is a wasteful number, since it uses less digits than its factorization.

398837089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477279.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 398837089 is about 19970.9060635716. The cubic root of 398837089 is about 736.0915731848.

The spelling of 398837089 in words is "three hundred ninety-eight million, eight hundred thirty-seven thousand, eighty-nine".