916509908 has 12 divisors (see below), whose sum is σ = 1612204020. Its totient is φ = 455880192.

The previous prime is 916509901. The next prime is 916509959. The reversal of 916509908 is 809905619.

It can be written as a sum of positive squares in 2 ways, for example, as 289408144 + 627101764 = 17012^2 + 25042^2 .

It is a super-2 number, since 2×916509908² = 1679980822924336928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916509901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592823 + ... + 594366.

It is an arithmetic number, because the mean of its divisors is an integer number (134350335).

Almost surely, 2^916509908 is an apocalyptic number.

It is an amenable number.

916509908 is a deficient number, since it is larger than the sum of its proper divisors (695694112).

916509908 is a wasteful number, since it uses less digits than its factorization.

916509908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187386 (or 1187384 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 916509908 is about 30273.9146461108. The cubic root of 916509908 is about 971.3574037952.

The spelling of 916509908 in words is "nine hundred sixteen million, five hundred nine thousand, nine hundred eight".