999629400 has 432 divisors, whose sum is σ = 3976386120. Its totient is φ = 206976000.

The previous prime is 999629363. The next prime is 999629419. The reversal of 999629400 is 4926999.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 999629400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3557260 + ... + 3557540.

Almost surely, 2^999629400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999629400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988193060).

999629400 is an abundant number, since it is smaller than the sum of its proper divisors (2976756720).

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

999629400 is a wasteful number, since it uses less digits than its factorization.

999629400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 999629400 is about 31616.9163581776. The cubic root of 999629400 is about 999.8764514030.

The spelling of 999629400 in words is "nine hundred ninety-nine million, six hundred twenty-nine thousand, four hundred".