1393972229 has 8 divisors (see below), whose sum is σ = 1505387520. Its totient is φ = 1283155056.

The previous prime is 1393972219. The next prime is 1393972231. The reversal of 1393972229 is 9222793931.

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 1393972229 - 2¹² = 1393968133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393972219) 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, 144677 + ... + 154010.

It is an arithmetic number, because the mean of its divisors is an integer number (188173440).

Almost surely, 2^1393972229 is an apocalyptic number.

It is an amenable number.

1393972229 is a deficient number, since it is larger than the sum of its proper divisors (111415291).

1393972229 is a wasteful number, since it uses less digits than its factorization.

1393972229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299059.

The product of its digits is 367416, while the sum is 47.

The square root of 1393972229 is about 37335.9374999477. The cubic root of 1393972229 is about 1117.0811083410.

It can be divided in two parts, 13939 and 72229, that added together give a palindrome (86168).

The spelling of 1393972229 in words is "one billion, three hundred ninety-three million, nine hundred seventy-two thousand, two hundred twenty-nine".