904749613 has 4 divisors (see below), whose sum is σ = 904812480. Its totient is φ = 904686748.

The previous prime is 904749611. The next prime is 904749647. The reversal of 904749613 is 316947409.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 316947409 = 29 ⋅10929221.

It is a cyclic number.

It is not a de Polignac number, because 904749613 - 2¹ = 904749611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 904749613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904749611) 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 3 ways as a sum of consecutive naturals, for example, 2028 + ... + 42586.

It is an arithmetic number, because the mean of its divisors is an integer number (226203120).

Almost surely, 2^904749613 is an apocalyptic number.

It is an amenable number.

904749613 is a deficient number, since it is larger than the sum of its proper divisors (62867).

904749613 is a wasteful number, since it uses less digits than its factorization.

904749613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62866.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 904749613 is about 30079.0560523431. The cubic root of 904749613 is about 967.1848133911.

The spelling of 904749613 in words is "nine hundred four million, seven hundred forty-nine thousand, six hundred thirteen".