1399924 has 6 divisors (see below), whose sum is σ = 2449874. Its totient is φ = 699960.

The previous prime is 1399919. The next prime is 1399943. The reversal of 1399924 is 4299931.

It can be written as a sum of positive squares in only one way, i.e., 964324 + 435600 = 982^2 + 660^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174987 + ... + 174994.

2^1399924 is an apocalyptic number.

It is an amenable number.

1399924 is a deficient number, since it is larger than the sum of its proper divisors (1049950).

1399924 is a wasteful number, since it uses less digits than its factorization.

1399924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349985 (or 349983 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 1399924 is about 1183.1838403224. The cubic root of 1399924 is about 111.8668698772.

The spelling of 1399924 in words is "one million, three hundred ninety-nine thousand, nine hundred twenty-four".