1226634899 has 8 divisors (see below), whose sum is σ = 1434470400. Its totient is φ = 1026949896.

The previous prime is 1226634883. The next prime is 1226634943. The reversal of 1226634899 is 9984366221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226634899 - 2⁴ = 1226634883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226634859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037299 + ... + 2037900.

It is an arithmetic number, because the mean of its divisors is an integer number (179308800).

Almost surely, 2^1226634899 is an apocalyptic number.

1226634899 is a deficient number, since it is larger than the sum of its proper divisors (207835501).

1226634899 is an equidigital number, since it uses as much as digits as its factorization.

1226634899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075249.

The product of its digits is 1119744, while the sum is 50.

The square root of 1226634899 is about 35023.3479124997. The cubic root of 1226634899 is about 1070.4632748010.

The spelling of 1226634899 in words is "one billion, two hundred twenty-six million, six hundred thirty-four thousand, eight hundred ninety-nine".