633729942 has 48 divisors (see below), whose sum is σ = 1401042240. Its totient is φ = 206983296.

The previous prime is 633729913. The next prime is 633729949. The reversal of 633729942 is 249927336.

633729942 is a `hidden beast` number, since 633 + 7 + 2 + 9 + 9 + 4 + 2 = 666.

It is a super-2 number, since 2×633729942² = 803227278774646728, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633729949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193188 + ... + 196440.

It is an arithmetic number, because the mean of its divisors is an integer number (29188380).

Almost surely, 2^633729942 is an apocalyptic number.

633729942 is an abundant number, since it is smaller than the sum of its proper divisors (767312298).

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

633729942 is a wasteful number, since it uses less digits than its factorization.

633729942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477 (or 3474 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 633729942 is about 25173.9933661706. The cubic root of 633729942 is about 858.9503789251.

The spelling of 633729942 in words is "six hundred thirty-three million, seven hundred twenty-nine thousand, nine hundred forty-two".