424021986 has 32 divisors (see below), whose sum is σ = 943588800. Its totient is φ = 141143040.

The previous prime is 424021903. The next prime is 424022063. The reversal of 424021986 is 689120424.

It is a super-2 number, since 2×424021986² = 359589289222768392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424021986.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36421 + ... + 46631.

It is an arithmetic number, because the mean of its divisors is an integer number (29487150).

Almost surely, 2^424021986 is an apocalyptic number.

424021986 is an abundant number, since it is smaller than the sum of its proper divisors (519566814).

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

424021986 is a wasteful number, since it uses less digits than its factorization.

424021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10991 (or 10985 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 424021986 is about 20591.7941423277. The cubic root of 424021986 is about 751.2701357925.

The spelling of 424021986 in words is "four hundred twenty-four million, twenty-one thousand, nine hundred eighty-six".