1454391779 has 2 divisors, whose sum is σ = 1454391780. Its totient is φ = 1454391778.

The previous prime is 1454391773. The next prime is 1454391791. The reversal of 1454391779 is 9771934541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1454391779 - 2²⁸ = 1185956323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1454391773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727195889 + 727195890.

It is an arithmetic number, because the mean of its divisors is an integer number (727195890).

Almost surely, 2^1454391779 is an apocalyptic number.

1454391779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1454391779 is an equidigital number, since it uses as much as digits as its factorization.

1454391779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 1454391779 is about 38136.4888132088. The cubic root of 1454391779 is about 1132.9927661145.

The spelling of 1454391779 in words is "one billion, four hundred fifty-four million, three hundred ninety-one thousand, seven hundred seventy-nine".