904149 has 8 divisors (see below), whose sum is σ = 1339520. Its totient is φ = 602748.

The previous prime is 904147. The next prime is 904157. The reversal of 904149 is 941409.

It is not a de Polignac number, because 904149 - 2¹ = 904147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 33487 = 904149 / (9 + 0 + 4 + 1 + 4 + 9).

It is a Duffinian number.

904149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16717 + ... + 16770.

It is an arithmetic number, because the mean of its divisors is an integer number (167440).

2⁹⁰⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

904149 is a deficient number, since it is larger than the sum of its proper divisors (435371).

904149 is a wasteful number, since it uses less digits than its factorization.

904149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33496 (or 33490 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 904149 is about 950.8674986558. The cubic root of 904149 is about 96.6970745928.

The spelling of 904149 in words is "nine hundred four thousand, one hundred forty-nine".