404248137 has 8 divisors (see below), whose sum is σ = 541734336. Its totient is φ = 268130352.

The previous prime is 404248109. The next prime is 404248171. The reversal of 404248137 is 731842404.

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

It is not a de Polignac number, because 404248137 - 2⁶ = 404248073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404248098 and 404248107.

It is not an unprimeable number, because it can be changed into a prime (404248837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341413 + ... + 342594.

It is an arithmetic number, because the mean of its divisors is an integer number (67716792).

Almost surely, 2^404248137 is an apocalyptic number.

It is an amenable number.

404248137 is a deficient number, since it is larger than the sum of its proper divisors (137486199).

404248137 is a wasteful number, since it uses less digits than its factorization.

404248137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684207.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 404248137 is about 20105.9229333050. The cubic root of 404248137 is about 739.4054982898.

The spelling of 404248137 in words is "four hundred four million, two hundred forty-eight thousand, one hundred thirty-seven".