426993505 has 32 divisors (see below), whose sum is σ = 581520384. Its totient is φ = 299160576.

The previous prime is 426993481. The next prime is 426993509. The reversal of 426993505 is 505399624.

It is a cyclic number.

It is not a de Polignac number, because 426993505 - 2¹¹ = 426991457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426993509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69384 + ... + 75286.

It is an arithmetic number, because the mean of its divisors is an integer number (18172512).

Almost surely, 2^426993505 is an apocalyptic number.

It is an amenable number.

426993505 is a deficient number, since it is larger than the sum of its proper divisors (154526879).

426993505 is a wasteful number, since it uses less digits than its factorization.

426993505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985.

The product of its (nonzero) digits is 291600, while the sum is 43.

The square root of 426993505 is about 20663.8211616342. The cubic root of 426993505 is about 753.0210031960.

The spelling of 426993505 in words is "four hundred twenty-six million, nine hundred ninety-three thousand, five hundred five".