1392993829 has 8 divisors (see below), whose sum is σ = 1398267000. Its totient is φ = 1387730112.

The previous prime is 1392993809. The next prime is 1392993839. The reversal of 1392993829 is 9283992931.

It can be written as a sum of positive squares in 4 ways, for example, as 43533604 + 1349460225 = 6598^2 + 36735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1392993829 - 2⁹ = 1392993317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1392993829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392993809) 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, 429787 + ... + 433015.

It is an arithmetic number, because the mean of its divisors is an integer number (174783375).

Almost surely, 2^1392993829 is an apocalyptic number.

It is an amenable number.

1392993829 is a deficient number, since it is larger than the sum of its proper divisors (5273171).

1392993829 is a wasteful number, since it uses less digits than its factorization.

1392993829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727.

The product of its digits is 1889568, while the sum is 55.

The square root of 1392993829 is about 37322.8325425603. The cubic root of 1392993829 is about 1116.8196952033.

The spelling of 1392993829 in words is "one billion, three hundred ninety-two million, nine hundred ninety-three thousand, eight hundred twenty-nine".