424899972 has 144 divisors (see below), whose sum is σ = 1357110720. Its totient is φ = 114234624.

The previous prime is 424899949. The next prime is 424899977. The reversal of 424899972 is 279998424.

424899972 is a `hidden beast` number, since 4 + 2 + 489 + 99 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424899977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87603 + ... + 92325.

It is an arithmetic number, because the mean of its divisors is an integer number (9424380).

Almost surely, 2^424899972 is an apocalyptic number.

424899972 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 424899972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678555360).

424899972 is an abundant number, since it is smaller than the sum of its proper divisors (932210748).

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

424899972 is a wasteful number, since it uses less digits than its factorization.

424899972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767 (or 4752 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 424899972 is about 20613.1019499735. The cubic root of 424899972 is about 751.7883085476.

The spelling of 424899972 in words is "four hundred twenty-four million, eight hundred ninety-nine thousand, nine hundred seventy-two".