1396226655 has 48 divisors (see below), whose sum is σ = 2444846976. Its totient is φ = 737095680.

The previous prime is 1396226599. The next prime is 1396226683. The reversal of 1396226655 is 5566226931.

1396226655 is a `hidden beast` number, since 13 + 9 + 622 + 6 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 1396226655 - 2⁷ = 1396226527 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1396226655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3239290 + ... + 3239720.

It is an arithmetic number, because the mean of its divisors is an integer number (50934312).

Almost surely, 2^1396226655 is an apocalyptic number.

1396226655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1396226655 is a deficient number, since it is larger than the sum of its proper divisors (1048620321).

1396226655 is a wasteful number, since it uses less digits than its factorization.

1396226655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008 (or 1005 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 1396226655 is about 37366.1164024307. The cubic root of 1396226655 is about 1117.6829903181.

The spelling of 1396226655 in words is "one billion, three hundred ninety-six million, two hundred twenty-six thousand, six hundred fifty-five".