1214388406 has 32 divisors (see below), whose sum is σ = 2285574912. Its totient is φ = 470115360.

The previous prime is 1214388403. The next prime is 1214388443. The reversal of 1214388406 is 6048834121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214388403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936 + ... + 49291.

It is an arithmetic number, because the mean of its divisors is an integer number (71424216).

Almost surely, 2^1214388406 is an apocalyptic number.

1214388406 is a deficient number, since it is larger than the sum of its proper divisors (1071186506).

1214388406 is a wasteful number, since it uses less digits than its factorization.

1214388406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50404.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 1214388406 is about 34848.0760731493. The cubic root of 1214388406 is about 1066.8889181197. Note that the first 3 decimals are identical.

The spelling of 1214388406 in words is "one billion, two hundred fourteen million, three hundred eighty-eight thousand, four hundred six".