421446293 has 2 divisors, whose sum is σ = 421446294. Its totient is φ = 421446292.

The previous prime is 421446283. The next prime is 421446307. The reversal of 421446293 is 392644124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307020484 + 114425809 = 17522^2 + 10697^2 .

It is a cyclic number.

It is not a de Polignac number, because 421446293 - 2⁸ = 421446037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421446203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210723146 + 210723147.

It is an arithmetic number, because the mean of its divisors is an integer number (210723147).

Almost surely, 2^421446293 is an apocalyptic number.

It is an amenable number.

421446293 is a deficient number, since it is larger than the sum of its proper divisors (1).

421446293 is an equidigital number, since it uses as much as digits as its factorization.

421446293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 421446293 is about 20529.1571429516. The cubic root of 421446293 is about 749.7458653045.

The spelling of 421446293 in words is "four hundred twenty-one million, four hundred forty-six thousand, two hundred ninety-three".