999977412 has 48 divisors (see below), whose sum is σ = 2706421760. Its totient is φ = 281441952.

The previous prime is 999977411. The next prime is 999977423. The reversal of 999977412 is 214779999.

It is not an unprimeable number, because it can be changed into a prime (999977411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83212 + ... + 94467.

Almost surely, 2^999977412 is an apocalyptic number.

It is an amenable number.

999977412 is an abundant number, since it is smaller than the sum of its proper divisors (1706444348).

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

999977412 is a wasteful number, since it uses less digits than its factorization.

999977412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177760 (or 177758 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 57.

The square root of 999977412 is about 31622.4194520280. The cubic root of 999977412 is about 999.9924706100.

The spelling of 999977412 in words is "nine hundred ninety-nine million, nine hundred seventy-seven thousand, four hundred twelve".