398287437 has 8 divisors (see below), whose sum is σ = 532758720. Its totient is φ = 264670560.

The previous prime is 398287399. The next prime is 398287453. The reversal of 398287437 is 734782893.

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

It is not a de Polignac number, because 398287437 - 2²⁰ = 397238861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398287437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398286437) by changing a digit.

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, 212512 + ... + 214377.

It is an arithmetic number, because the mean of its divisors is an integer number (66594840).

Almost surely, 2^398287437 is an apocalyptic number.

It is an amenable number.

398287437 is a deficient number, since it is larger than the sum of its proper divisors (134471283).

398287437 is a wasteful number, since it uses less digits than its factorization.

398287437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427203.

The product of its digits is 2032128, while the sum is 51.

The square root of 398287437 is about 19957.1400005111. The cubic root of 398287437 is about 735.7532728102.

It can be divided in two parts, 3982 and 87437, that added together give a palindrome (91419).

The spelling of 398287437 in words is "three hundred ninety-eight million, two hundred eighty-seven thousand, four hundred thirty-seven".