1345979 has 4 divisors (see below), whose sum is σ = 1416840. Its totient is φ = 1275120.

The previous prime is 1345973. The next prime is 1345987. The reversal of 1345979 is 9795431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1345979 - 2¹² = 1341883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1345973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35402 + ... + 35439.

It is an arithmetic number, because the mean of its divisors is an integer number (354210).

2^1345979 is an apocalyptic number.

1345979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1345979 is a deficient number, since it is larger than the sum of its proper divisors (70861).

1345979 is an equidigital number, since it uses as much as digits as its factorization.

1345979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70860.

The product of its digits is 34020, while the sum is 38.

The square root of 1345979 is about 1160.1633505675. The cubic root of 1345979 is about 110.4111062743.

The spelling of 1345979 in words is "one million, three hundred forty-five thousand, nine hundred seventy-nine".