1400393816 has 32 divisors (see below), whose sum is σ = 2664705600. Its totient is φ = 689844480.

The previous prime is 1400393809. The next prime is 1400393837. The reversal of 1400393816 is 6183930041.

It is a super-2 number, since 2×1400393816² = 3922205679782083712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327146 + ... + 331398.

It is an arithmetic number, because the mean of its divisors is an integer number (83272050).

Almost surely, 2^1400393816 is an apocalyptic number.

It is an amenable number.

1400393816 is a deficient number, since it is larger than the sum of its proper divisors (1264311784).

1400393816 is a wasteful number, since it uses less digits than its factorization.

1400393816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4859 (or 4855 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 1400393816 is about 37421.8360853660. The cubic root of 1400393816 is about 1118.7938269151.

The spelling of 1400393816 in words is "one billion, four hundred million, three hundred ninety-three thousand, eight hundred sixteen".