426220407 has 16 divisors (see below), whose sum is σ = 664672000. Its totient is φ = 269191512.

The previous prime is 426220397. The next prime is 426220409. The reversal of 426220407 is 704022624.

It is a happy number.

It is not a de Polignac number, because 426220407 - 2¹² = 426216311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426220409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414907 + ... + 415932.

It is an arithmetic number, because the mean of its divisors is an integer number (41542000).

Almost surely, 2^426220407 is an apocalyptic number.

426220407 is a deficient number, since it is larger than the sum of its proper divisors (238451593).

426220407 is a wasteful number, since it uses less digits than its factorization.

426220407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830867 (or 830861 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 426220407 is about 20645.1061271188. The cubic root of 426220407 is about 752.5662650298.

The spelling of 426220407 in words is "four hundred twenty-six million, two hundred twenty thousand, four hundred seven".