1282379897 has 4 divisors (see below), whose sum is σ = 1285150080. Its totient is φ = 1279609716.

The previous prime is 1282379873. The next prime is 1282379941. The reversal of 1282379897 is 7989732821.

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 1282379897 - 2⁸ = 1282379641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1282339897) 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, 1384397 + ... + 1385322.

It is an arithmetic number, because the mean of its divisors is an integer number (321287520).

Almost surely, 2^1282379897 is an apocalyptic number.

It is an amenable number.

1282379897 is a deficient number, since it is larger than the sum of its proper divisors (2770183).

1282379897 is an equidigital number, since it uses as much as digits as its factorization.

1282379897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770182.

The product of its digits is 3048192, while the sum is 56.

The square root of 1282379897 is about 35810.3322659816. The cubic root of 1282379897 is about 1086.4395502599.

The spelling of 1282379897 in words is "one billion, two hundred eighty-two million, three hundred seventy-nine thousand, eight hundred ninety-seven".