426993587 has 2 divisors, whose sum is σ = 426993588. Its totient is φ = 426993586.

The previous prime is 426993577. The next prime is 426993601. The reversal of 426993587 is 785399624.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426993587 - 2¹⁰ = 426992563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426993577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213496793 + 213496794.

It is an arithmetic number, because the mean of its divisors is an integer number (213496794).

Almost surely, 2^426993587 is an apocalyptic number.

426993587 is a deficient number, since it is larger than the sum of its proper divisors (1).

426993587 is an equidigital number, since it uses as much as digits as its factorization.

426993587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 426993587 is about 20663.8231457782. The cubic root of 426993587 is about 753.0210513995.

The spelling of 426993587 in words is "four hundred twenty-six million, nine hundred ninety-three thousand, five hundred eighty-seven".