1214999091 has 12 divisors (see below), whose sum is σ = 1756682200. Its totient is φ = 809222400.

The previous prime is 1214999087. The next prime is 1214999101. The reversal of 1214999091 is 1909994121.

It is not a de Polignac number, because 1214999091 - 2² = 1214999087 is a prime.

It is a super-2 number, since 2×1214999091² = 2952445582261652562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210999091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54766 + ... + 73683.

Almost surely, 2^1214999091 is an apocalyptic number.

1214999091 is a deficient number, since it is larger than the sum of its proper divisors (541683109).

1214999091 is a wasteful number, since it uses less digits than its factorization.

1214999091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129506 (or 129503 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 1214999091 is about 34856.8370768204. The cubic root of 1214999091 is about 1067.0677252386.

The spelling of 1214999091 in words is "one billion, two hundred fourteen million, nine hundred ninety-nine thousand, ninety-one".