1387924 has 12 divisors (see below), whose sum is σ = 2437344. Its totient is φ = 691544.

The previous prime is 1387921. The next prime is 1387927. The reversal of 1387924 is 4297831.

It is an interprime number because it is at equal distance from previous prime (1387921) and next prime (1387927).

It is a d-powerful number, because it can be written as 1 + 3³ + 8⁵ + 7⁷ + 9⁶ + 2⁷ + 4² .

It is a self number, because there is not a number n which added to its sum of digits gives 1387924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387921) 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, 1497 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

2^1387924 is an apocalyptic number.

It is an amenable number.

1387924 is a deficient number, since it is larger than the sum of its proper divisors (1049420).

1387924 is a wasteful number, since it uses less digits than its factorization.

1387924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1387924 is about 1178.1018631680. The cubic root of 1387924 is about 111.5463152249.

The spelling of 1387924 in words is "one million, three hundred eighty-seven thousand, nine hundred twenty-four".