426722407 has 2 divisors, whose sum is σ = 426722408. Its totient is φ = 426722406.

The previous prime is 426722393. The next prime is 426722437. The reversal of 426722407 is 704227624.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426722407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426722437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213361203 + 213361204.

It is an arithmetic number, because the mean of its divisors is an integer number (213361204).

Almost surely, 2^426722407 is an apocalyptic number.

426722407 is a deficient number, since it is larger than the sum of its proper divisors (1).

426722407 is an equidigital number, since it uses as much as digits as its factorization.

426722407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 426722407 is about 20657.2603943505. The cubic root of 426722407 is about 752.8616052160.

The spelling of 426722407 in words is "four hundred twenty-six million, seven hundred twenty-two thousand, four hundred seven".