423979537 has 2 divisors, whose sum is σ = 423979538. Its totient is φ = 423979536.

The previous prime is 423979519. The next prime is 423979561. The reversal of 423979537 is 735979324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386083201 + 37896336 = 19649^2 + 6156^2 .

It is a cyclic number.

It is not a de Polignac number, because 423979537 - 2¹⁵ = 423946769 is a prime.

It is not a weakly prime, because it can be changed into another prime (423979597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211989768 + 211989769.

It is an arithmetic number, because the mean of its divisors is an integer number (211989769).

Almost surely, 2^423979537 is an apocalyptic number.

It is an amenable number.

423979537 is a deficient number, since it is larger than the sum of its proper divisors (1).

423979537 is an equidigital number, since it uses as much as digits as its factorization.

423979537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The square root of 423979537 is about 20590.7633904137. The cubic root of 423979537 is about 751.2450649776.

The spelling of 423979537 in words is "four hundred twenty-three million, nine hundred seventy-nine thousand, five hundred thirty-seven".