1399722 has 16 divisors (see below), whose sum is σ = 2835840. Its totient is φ = 460512.

The previous prime is 1399721. The next prime is 1399733. The reversal of 1399722 is 2279931.

It is not an unprimeable number, because it can be changed into a prime (1399721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 1950.

It is an arithmetic number, because the mean of its divisors is an integer number (177240).

2^1399722 is an apocalyptic number.

1399722 is an abundant number, since it is smaller than the sum of its proper divisors (1436118).

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

1399722 is a wasteful number, since it uses less digits than its factorization.

1399722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037.

The product of its digits is 6804, while the sum is 33.

The square root of 1399722 is about 1183.0984743461. The cubic root of 1399722 is about 111.8614890626.

The spelling of 1399722 in words is "one million, three hundred ninety-nine thousand, seven hundred twenty-two".