1399727 has 4 divisors (see below), whose sum is σ = 1599696. Its totient is φ = 1199760.

The previous prime is 1399721. The next prime is 1399733. The reversal of 1399727 is 7279931.

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 (1399721) and next prime (1399733).

It is a cyclic number.

It is not a de Polignac number, because 1399727 - 2⁶ = 1399663 is a prime.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 99974 + ... + 99987.

It is an arithmetic number, because the mean of its divisors is an integer number (399924).

2^1399727 is an apocalyptic number.

1399727 is a deficient number, since it is larger than the sum of its proper divisors (199969).

1399727 is an equidigital number, since it uses as much as digits as its factorization.

1399727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199968.

The product of its digits is 23814, while the sum is 38.

The square root of 1399727 is about 1183.1005874396. The cubic root of 1399727 is about 111.8616222573.

The spelling of 1399727 in words is "one million, three hundred ninety-nine thousand, seven hundred twenty-seven".