1427979369 has 8 divisors (see below), whose sum is σ = 1955431360. Its totient is φ = 926256816.

The previous prime is 1427979349. The next prime is 1427979373. The reversal of 1427979369 is 9639797241.

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

It is not a de Polignac number, because 1427979369 - 2⁹ = 1427978857 is a prime.

It is a super-2 number, since 2×1427979369² = 4078250156579276322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1427979349) 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, 6432229 + ... + 6432450.

It is an arithmetic number, because the mean of its divisors is an integer number (244428920).

Almost surely, 2^1427979369 is an apocalyptic number.

It is an amenable number.

1427979369 is a deficient number, since it is larger than the sum of its proper divisors (527451991).

1427979369 is a wasteful number, since it uses less digits than its factorization.

1427979369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12864719.

The product of its digits is 5143824, while the sum is 57.

The square root of 1427979369 is about 37788.6142773190. The cubic root of 1427979369 is about 1126.0922709159.

The spelling of 1427979369 in words is "one billion, four hundred twenty-seven million, nine hundred seventy-nine thousand, three hundred sixty-nine".