1325440379 has 2 divisors, whose sum is σ = 1325440380. Its totient is φ = 1325440378.

The previous prime is 1325440349. The next prime is 1325440387. The reversal of 1325440379 is 9730445231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1325440379 - 2²⁴ = 1308663163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1325440349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662720189 + 662720190.

It is an arithmetic number, because the mean of its divisors is an integer number (662720190).

Almost surely, 2^1325440379 is an apocalyptic number.

1325440379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1325440379 is an equidigital number, since it uses as much as digits as its factorization.

1325440379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 1325440379 is about 36406.5980146456. The cubic root of 1325440379 is about 1098.4662865272.

The spelling of 1325440379 in words is "one billion, three hundred twenty-five million, four hundred forty thousand, three hundred seventy-nine".