1214390487 has 4 divisors (see below), whose sum is σ = 1619187320. Its totient is φ = 809593656.

The previous prime is 1214390479. The next prime is 1214390503. The reversal of 1214390487 is 7840934121.

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

It is not a de Polignac number, because 1214390487 - 2³ = 1214390479 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 (1214390987) 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, 202398412 + ... + 202398417.

It is an arithmetic number, because the mean of its divisors is an integer number (404796830).

Almost surely, 2^1214390487 is an apocalyptic number.

1214390487 is a deficient number, since it is larger than the sum of its proper divisors (404796833).

1214390487 is an equidigital number, since it uses as much as digits as its factorization.

1214390487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404796832.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1214390487 is about 34848.1059313128. The cubic root of 1214390487 is about 1066.8895275334.

The spelling of 1214390487 in words is "one billion, two hundred fourteen million, three hundred ninety thousand, four hundred eighty-seven".