1993941 has 6 divisors (see below), whose sum is σ = 2880150. Its totient is φ = 1329288.

The previous prime is 1993933. The next prime is 1993949. The reversal of 1993941 is 1493991.

It is an interprime number because it is at equal distance from previous prime (1993933) and next prime (1993949).

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 680625 = 1146^2 + 825^2 .

It is not a de Polignac number, because 1993941 - 2³ = 1993933 is a prime.

It is a super-2 number, since 2×1993941² = 7951601422962, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1993896 and 1993905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110766 + ... + 110783.

It is an arithmetic number, because the mean of its divisors is an integer number (480025).

2^1993941 is an apocalyptic number.

It is an amenable number.

1993941 is a deficient number, since it is larger than the sum of its proper divisors (886209).

1993941 is a wasteful number, since it uses less digits than its factorization.

1993941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221555 (or 221552 counting only the distinct ones).

The product of its digits is 8748, while the sum is 36.

The square root of 1993941 is about 1412.0697574837. The cubic root of 1993941 is about 125.8647452633.

The spelling of 1993941 in words is "one million, nine hundred ninety-three thousand, nine hundred forty-one".