39998912 has 14 divisors (see below), whose sum is σ = 79372968. Its totient is φ = 19999424.

The previous prime is 39998911. The next prime is 39998939. The reversal of 39998912 is 21989993.

It is a super-3 number, since 3×39998912³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39998911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312428 + ... + 312555.

Almost surely, 2^39998912 is an apocalyptic number.

39998912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39998912 is a deficient number, since it is larger than the sum of its proper divisors (39374056).

39998912 is an equidigital number, since it uses as much as digits as its factorization.

39998912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624995 (or 624985 counting only the distinct ones).

The product of its digits is 314928, while the sum is 50.

The square root of 39998912 is about 6324.4693057995. The cubic root of 39998912 is about 341.9920885508.

The spelling of 39998912 in words is "thirty-nine million, nine hundred ninety-eight thousand, nine hundred twelve".