904387 has 4 divisors (see below), whose sum is σ = 986616. Its totient is φ = 822160.

The previous prime is 904369. The next prime is 904399. The reversal of 904387 is 783409.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904387 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (904357) 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 3 ways as a sum of consecutive naturals, for example, 41098 + ... + 41119.

It is an arithmetic number, because the mean of its divisors is an integer number (246654).

2⁹⁰⁴³⁸⁷ is an apocalyptic number.

904387 is a deficient number, since it is larger than the sum of its proper divisors (82229).

904387 is a wasteful number, since it uses less digits than its factorization.

904387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82228.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 904387 is about 950.9926392985. The cubic root of 904387 is about 96.7055584027.

The spelling of 904387 in words is "nine hundred four thousand, three hundred eighty-seven".