1395993769 has 3 divisors (see below), whose sum is σ = 1396031133. Its totient is φ = 1395956406.

The previous prime is 1395993737. The next prime is 1395993773. The reversal of 1395993769 is 9673995931.

The square root of 1395993769 is 37363.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1395993769 - 2⁵ = 1395993737 is a prime.

It is a super-2 number, since 2×1395993769² = 3897597206173650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395993799) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18682 + ... + 56044.

It is an arithmetic number, because the mean of its divisors is an integer number (465343711).

Almost surely, 2^1395993769 is an apocalyptic number.

1395993769 is the 37363-rd square number.

1395993769 is the 18682-nd centered octagonal number.

It is an amenable number.

1395993769 is a deficient number, since it is larger than the sum of its proper divisors (37364).

1395993769 is an frugal number, since it uses more digits than its factorization.

1395993769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74726 (or 37363 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 61.

The cubic root of 1395993769 is about 1117.6208449176.

The spelling of 1395993769 in words is "one billion, three hundred ninety-five million, nine hundred ninety-three thousand, seven hundred sixty-nine".