1227988923 has 8 divisors (see below), whose sum is σ = 1871221248. Its totient is φ = 701707944.

The previous prime is 1227988871. The next prime is 1227989017. The reversal of 1227988923 is 3298897221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1227988923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1227988823) 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, 29237811 + ... + 29237852.

It is an arithmetic number, because the mean of its divisors is an integer number (233902656).

Almost surely, 2^1227988923 is an apocalyptic number.

1227988923 is a deficient number, since it is larger than the sum of its proper divisors (643232325).

1227988923 is an equidigital number, since it uses as much as digits as its factorization.

1227988923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58475673.

The product of its digits is 870912, while the sum is 51.

The square root of 1227988923 is about 35042.6728860685. The cubic root of 1227988923 is about 1070.8570078162.

The spelling of 1227988923 in words is "one billion, two hundred twenty-seven million, nine hundred eighty-eight thousand, nine hundred twenty-three".