1423693388 has 12 divisors (see below), whose sum is σ = 2683114560. Its totient is φ = 657089232.

The previous prime is 1423693343. The next prime is 1423693409. The reversal of 1423693388 is 8833963241.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13689308 + ... + 13689411.

It is an arithmetic number, because the mean of its divisors is an integer number (223592880).

Almost surely, 2^1423693388 is an apocalyptic number.

It is an amenable number.

1423693388 is a deficient number, since it is larger than the sum of its proper divisors (1259421172).

1423693388 is a wasteful number, since it uses less digits than its factorization.

1423693388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27378736 (or 27378734 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 1423693388 is about 37731.8617086409. The cubic root of 1423693388 is about 1124.9645125925.

The spelling of 1423693388 in words is "one billion, four hundred twenty-three million, six hundred ninety-three thousand, three hundred eighty-eight".