1214856399 has 4 divisors (see below), whose sum is σ = 1619808536. Its totient is φ = 809904264.

The previous prime is 1214856373. The next prime is 1214856413. The reversal of 1214856399 is 9936584121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1214856399 - 2⁷ = 1214856271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214856899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202476064 + ... + 202476069.

It is an arithmetic number, because the mean of its divisors is an integer number (404952134).

Almost surely, 2^1214856399 is an apocalyptic number.

1214856399 is a deficient number, since it is larger than the sum of its proper divisors (404952137).

1214856399 is an equidigital number, since it uses as much as digits as its factorization.

1214856399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404952136.

The product of its digits is 466560, while the sum is 48.

The square root of 1214856399 is about 34854.7901872899. The cubic root of 1214856399 is about 1067.0259507248.

The spelling of 1214856399 in words is "one billion, two hundred fourteen million, eight hundred fifty-six thousand, three hundred ninety-nine".