945991312 has 20 divisors (see below), whose sum is σ = 2094695296. Its totient is φ = 405424800.

The previous prime is 945991303. The next prime is 945991313. The reversal of 945991312 is 213199549.

It is a super-3 number, since 3×945991312³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (945991313) 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, 4223064 + ... + 4223287.

Almost surely, 2^945991312 is an apocalyptic number.

It is an amenable number.

945991312 is an abundant number, since it is smaller than the sum of its proper divisors (1148703984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

945991312 is a wasteful number, since it uses less digits than its factorization.

945991312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8446366 (or 8446360 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The square root of 945991312 is about 30756.9717625126. The cubic root of 945991312 is about 981.6629104209.

The spelling of 945991312 in words is "nine hundred forty-five million, nine hundred ninety-one thousand, three hundred twelve".