421144386 has 32 divisors (see below), whose sum is σ = 954824640. Its totient is φ = 122762304.

The previous prime is 421144357. The next prime is 421144387. The reversal of 421144386 is 683441124.

It is not an unprimeable number, because it can be changed into a prime (421144387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140605 + ... + 143568.

It is an arithmetic number, because the mean of its divisors is an integer number (29838270).

Almost surely, 2^421144386 is an apocalyptic number.

421144386 is an abundant number, since it is smaller than the sum of its proper divisors (533680254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421144386 is a wasteful number, since it uses less digits than its factorization.

421144386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284210.

The product of its digits is 18432, while the sum is 33.

The square root of 421144386 is about 20521.8026985935. The cubic root of 421144386 is about 749.5667933798.

The spelling of 421144386 in words is "four hundred twenty-one million, one hundred forty-four thousand, three hundred eighty-six".