1379806 has 4 divisors (see below), whose sum is σ = 2069712. Its totient is φ = 689902.

The previous prime is 1379803. The next prime is 1379809. The reversal of 1379806 is 6089731.

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

It is an interprime number because it is at equal distance from previous prime (1379803) and next prime (1379809).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344950 + ... + 344953.

It is an arithmetic number, because the mean of its divisors is an integer number (517428).

2^1379806 is an apocalyptic number.

1379806 is a deficient number, since it is larger than the sum of its proper divisors (689906).

1379806 is an equidigital number, since it uses as much as digits as its factorization.

1379806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689905.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1379806 is about 1174.6514376614. The cubic root of 1379806 is about 111.3284108245.

The spelling of 1379806 in words is "one million, three hundred seventy-nine thousand, eight hundred six".