1391229293 has 8 divisors (see below), whose sum is σ = 1399641600. Its totient is φ = 1382829120.

The previous prime is 1391229271. The next prime is 1391229331. The reversal of 1391229293 is 3929221931.

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 1391229293 - 2²² = 1387034989 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 1391229293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391222293) 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, 337358 + ... + 341456.

It is an arithmetic number, because the mean of its divisors is an integer number (174955200).

Almost surely, 2^1391229293 is an apocalyptic number.

It is an amenable number.

1391229293 is a deficient number, since it is larger than the sum of its proper divisors (8412307).

1391229293 is a wasteful number, since it uses less digits than its factorization.

1391229293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067.

The product of its digits is 52488, while the sum is 41.

The square root of 1391229293 is about 37299.1862243669. The cubic root of 1391229293 is about 1116.3479292368.

The spelling of 1391229293 in words is "one billion, three hundred ninety-one million, two hundred twenty-nine thousand, two hundred ninety-three".