900749 has 4 divisors (see below), whose sum is σ = 939936. Its totient is φ = 861564.

The previous prime is 900743. The next prime is 900751. The reversal of 900749 is 947009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 900749 - 2¹⁶ = 835213 is a prime.

It is a super-2 number, since 2×900749² = 1622697522002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900743) 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 3 ways as a sum of consecutive naturals, for example, 19559 + ... + 19604.

It is an arithmetic number, because the mean of its divisors is an integer number (234984).

2⁹⁰⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

900749 is a deficient number, since it is larger than the sum of its proper divisors (39187).

900749 is a wasteful number, since it uses less digits than its factorization.

900749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39186.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 900749 is about 949.0779736144. The cubic root of 900749 is about 96.5757144248.

The spelling of 900749 in words is "nine hundred thousand, seven hundred forty-nine".