1422779923 has 2 divisors, whose sum is σ = 1422779924. Its totient is φ = 1422779922.

The previous prime is 1422779903. The next prime is 1422779947. The reversal of 1422779923 is 3299772241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1422779923 - 2¹³ = 1422771731 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422779903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711389961 + 711389962.

It is an arithmetic number, because the mean of its divisors is an integer number (711389962).

Almost surely, 2^1422779923 is an apocalyptic number.

1422779923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422779923 is an equidigital number, since it uses as much as digits as its factorization.

1422779923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 1422779923 is about 37719.7550760871. The cubic root of 1422779923 is about 1124.7238625635.

The spelling of 1422779923 in words is "one billion, four hundred twenty-two million, seven hundred seventy-nine thousand, nine hundred twenty-three".