426997849 has 4 divisors (see below), whose sum is σ = 449471440. Its totient is φ = 404524260.

The previous prime is 426997847. The next prime is 426997873. The reversal of 426997849 is 948799624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426997849 - 2¹ = 426997847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 426997793 and 426997802.

It is not an unprimeable number, because it can be changed into a prime (426997841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11236767 + ... + 11236804.

It is an arithmetic number, because the mean of its divisors is an integer number (112367860).

Almost surely, 2^426997849 is an apocalyptic number.

It is an amenable number.

426997849 is a deficient number, since it is larger than the sum of its proper divisors (22473591).

426997849 is a wasteful number, since it uses less digits than its factorization.

426997849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22473590.

The product of its digits is 7838208, while the sum is 58.

The square root of 426997849 is about 20663.9262726133. The cubic root of 426997849 is about 753.0235567962.

The spelling of 426997849 in words is "four hundred twenty-six million, nine hundred ninety-seven thousand, eight hundred forty-nine".