1427883221 has 4 divisors (see below), whose sum is σ = 1441228032. Its totient is φ = 1414538412.

The previous prime is 1427883167. The next prime is 1427883251. The reversal of 1427883221 is 1223887241.

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 1427883221 - 2¹⁴ = 1427866837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427883251) 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, 6672245 + ... + 6672458.

It is an arithmetic number, because the mean of its divisors is an integer number (360307008).

Almost surely, 2^1427883221 is an apocalyptic number.

It is an amenable number.

1427883221 is a deficient number, since it is larger than the sum of its proper divisors (13344811).

1427883221 is a wasteful number, since it uses less digits than its factorization.

1427883221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344810.

The product of its digits is 43008, while the sum is 38.

The square root of 1427883221 is about 37787.3420737686. The cubic root of 1427883221 is about 1126.0669965195.

The spelling of 1427883221 in words is "one billion, four hundred twenty-seven million, eight hundred eighty-three thousand, two hundred twenty-one".