1999701400 has 48 divisors (see below), whose sum is σ = 4652369640. Its totient is φ = 799353600.

The previous prime is 1999701391. The next prime is 1999701413. The reversal of 1999701400 is 41079991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472092 + ... + 476308.

Almost surely, 2^1999701400 is an apocalyptic number.

1999701400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1999701400 is an abundant number, since it is smaller than the sum of its proper divisors (2652668240).

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

1999701400 is a wasteful number, since it uses less digits than its factorization.

1999701400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604 (or 6595 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 1999701400 is about 44718.0209758885. The cubic root of 1999701400 is about 1259.8583447032.

The spelling of 1999701400 in words is "one billion, nine hundred ninety-nine million, seven hundred one thousand, four hundred".