1227913 has 4 divisors (see below), whose sum is σ = 1292560. Its totient is φ = 1163268.

The previous prime is 1227911. The next prime is 1227917. The reversal of 1227913 is 3197221.

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.

It is a cyclic number.

It is not a de Polignac number, because 1227913 - 2¹ = 1227911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1227911) 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, 32295 + ... + 32332.

It is an arithmetic number, because the mean of its divisors is an integer number (323140).

2^1227913 is an apocalyptic number.

It is an amenable number.

1227913 is a deficient number, since it is larger than the sum of its proper divisors (64647).

1227913 is an equidigital number, since it uses as much as digits as its factorization.

1227913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64646.

The product of its digits is 756, while the sum is 25.

The square root of 1227913 is about 1108.1123589239. The cubic root of 1227913 is about 107.0834938032.

The spelling of 1227913 in words is "one million, two hundred twenty-seven thousand, nine hundred thirteen".