1371859 has 4 divisors (see below), whose sum is σ = 1374840. Its totient is φ = 1368880.

The previous prime is 1371841. The next prime is 1371863. The reversal of 1371859 is 9581731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1371859 - 2⁵ = 1371827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1371899) 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 3 ways as a sum of consecutive naturals, for example, 637 + ... + 1774.

It is an arithmetic number, because the mean of its divisors is an integer number (343710).

2^1371859 is an apocalyptic number.

1371859 is a deficient number, since it is larger than the sum of its proper divisors (2981).

1371859 is an equidigital number, since it uses as much as digits as its factorization.

1371859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980.

The product of its digits is 7560, while the sum is 34.

The square root of 1371859 is about 1171.2638473034. The cubic root of 1371859 is about 111.1142669844.

The spelling of 1371859 in words is "one million, three hundred seventy-one thousand, eight hundred fifty-nine".