1393996466 has 24 divisors (see below), whose sum is σ = 2215926300. Its totient is φ = 657524736.

The previous prime is 1393996411. The next prime is 1393996477. The reversal of 1393996466 is 6646993931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1315585441 + 78411025 = 36271^2 + 8855^2 .

It is a super-2 number, since 2×1393996466² = 3886452294440978312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68210 + ... + 86258.

Almost surely, 2^1393996466 is an apocalyptic number.

1393996466 is a deficient number, since it is larger than the sum of its proper divisors (821929834).

1393996466 is a wasteful number, since it uses less digits than its factorization.

1393996466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18170 (or 18147 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 56.

The square root of 1393996466 is about 37336.2620785745. The cubic root of 1393996466 is about 1117.0875825345.

The spelling of 1393996466 in words is "one billion, three hundred ninety-three million, nine hundred ninety-six thousand, four hundred sixty-six".