1214267897 has 4 divisors (see below), whose sum is σ = 1215911760. Its totient is φ = 1212624036.

The previous prime is 1214267893. The next prime is 1214267939. The reversal of 1214267897 is 7987624121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7987624121 = 37 ⋅215881733.

It is a cyclic number.

It is not a de Polignac number, because 1214267897 - 2² = 1214267893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1214267893) 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, 820823 + ... + 822300.

It is an arithmetic number, because the mean of its divisors is an integer number (303977940).

Almost surely, 2^1214267897 is an apocalyptic number.

It is an amenable number.

1214267897 is a deficient number, since it is larger than the sum of its proper divisors (1643863).

1214267897 is an equidigital number, since it uses as much as digits as its factorization.

1214267897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643862.

The product of its digits is 338688, while the sum is 47.

The square root of 1214267897 is about 34846.3469677956. The cubic root of 1214267897 is about 1066.8536262891.

The spelling of 1214267897 in words is "one billion, two hundred fourteen million, two hundred sixty-seven thousand, eight hundred ninety-seven".