423977573 has 2 divisors, whose sum is σ = 423977574. Its totient is φ = 423977572.

The previous prime is 423977539. The next prime is 423977621. The reversal of 423977573 is 375779324.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346220449 + 77757124 = 18607^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 423977573 - 2¹² = 423973477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423977513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211988786 + 211988787.

It is an arithmetic number, because the mean of its divisors is an integer number (211988787).

Almost surely, 2^423977573 is an apocalyptic number.

It is an amenable number.

423977573 is a deficient number, since it is larger than the sum of its proper divisors (1).

423977573 is an equidigital number, since it uses as much as digits as its factorization.

423977573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111320, while the sum is 47.

The square root of 423977573 is about 20590.7156990718. The cubic root of 423977573 is about 751.2439049785.

The spelling of 423977573 in words is "four hundred twenty-three million, nine hundred seventy-seven thousand, five hundred seventy-three".