908973613 has 4 divisors (see below), whose sum is σ = 909571968. Its totient is φ = 908375260.

The previous prime is 908973581. The next prime is 908973617. The reversal of 908973613 is 316379809.

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 an emirpimes, since its reverse is a distinct semiprime: 316379809 = 17 ⋅18610577.

It is a cyclic number.

It is not a de Polignac number, because 908973613 - 2⁵ = 908973581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (908973617) 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, 296893 + ... + 299938.

It is an arithmetic number, because the mean of its divisors is an integer number (227392992).

Almost surely, 2^908973613 is an apocalyptic number.

It is an amenable number.

908973613 is a deficient number, since it is larger than the sum of its proper divisors (598355).

908973613 is a wasteful number, since it uses less digits than its factorization.

908973613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598354.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 908973613 is about 30149.1892594146. The cubic root of 908973613 is about 968.6876407005.

The spelling of 908973613 in words is "nine hundred eight million, nine hundred seventy-three thousand, six hundred thirteen".