916649837 has 4 divisors (see below), whose sum is σ = 923647296. Its totient is φ = 909652380.

The previous prime is 916649827. The next prime is 916649857. The reversal of 916649837 is 738946619.

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 916649837 - 2¹⁰ = 916648813 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 (916649827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3498533 + ... + 3498794.

It is an arithmetic number, because the mean of its divisors is an integer number (230911824).

Almost surely, 2^916649837 is an apocalyptic number.

It is an amenable number.

916649837 is a deficient number, since it is larger than the sum of its proper divisors (6997459).

916649837 is a wasteful number, since it uses less digits than its factorization.

916649837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997458.

The product of its digits is 1959552, while the sum is 53.

The square root of 916649837 is about 30276.2256069015. The cubic root of 916649837 is about 971.4068355771.

The spelling of 916649837 in words is "nine hundred sixteen million, six hundred forty-nine thousand, eight hundred thirty-seven".