1321893 has 16 divisors (see below), whose sum is σ = 1976640. Its totient is φ = 873072.

The previous prime is 1321891. The next prime is 1321897. The reversal of 1321893 is 3981231.

It is not a de Polignac number, because 1321893 - 2¹ = 1321891 is a prime.

It is a super-2 number, since 2×1321893² = 3494802206898, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4530 + ... + 4812.

It is an arithmetic number, because the mean of its divisors is an integer number (123540).

2^1321893 is an apocalyptic number.

It is an amenable number.

1321893 is a deficient number, since it is larger than the sum of its proper divisors (654747).

1321893 is a wasteful number, since it uses less digits than its factorization.

1321893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 1321893 is about 1149.7360566669. The cubic root of 1321893 is about 109.7485440764.

It can be divided in two parts, 132 and 1893, that added together give a square (2025 = 45²).

The spelling of 1321893 in words is "one million, three hundred twenty-one thousand, eight hundred ninety-three".