1387029 has 12 divisors (see below), whose sum is σ = 2121824. Its totient is φ = 789504.

The previous prime is 1387021. The next prime is 1387037. The reversal of 1387029 is 9207831.

It is a happy number.

1387029 is nontrivially palindromic in base 4.

It is an interprime number because it is at equal distance from previous prime (1387021) and next prime (1387037).

It is not a de Polignac number, because 1387029 - 2³ = 1387021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386987 and 1387005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5269 + ... + 5525.

2^1387029 is an apocalyptic number.

It is an amenable number.

1387029 is a deficient number, since it is larger than the sum of its proper divisors (734795).

1387029 is an frugal number, since it uses more digits than its factorization.

1387029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1387029 is about 1177.7219536037. The cubic root of 1387029 is about 111.5223332636.

Multiplying 1387029 by its product of nonzero digits (3024), we get a square (4194375696 = 64764²).

The spelling of 1387029 in words is "one million, three hundred eighty-seven thousand, twenty-nine".