1993400 has 24 divisors (see below), whose sum is σ = 4635120. Its totient is φ = 797280.

The previous prime is 1993367. The next prime is 1993417. The reversal of 1993400 is 43991.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1993400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4784 + ... + 5183.

It is an arithmetic number, because the mean of its divisors is an integer number (193130).

2^1993400 is an apocalyptic number.

1993400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993400 is an abundant number, since it is smaller than the sum of its proper divisors (2641720).

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

1993400 is a wasteful number, since it uses less digits than its factorization.

1993400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983 (or 9974 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1993400 is about 1411.8781817140. The cubic root of 1993400 is about 125.8533609434.

The spelling of 1993400 in words is "one million, nine hundred ninety-three thousand, four hundred".