63729893 has 8 divisors (see below), whose sum is σ = 65886720. Its totient is φ = 61579440.

The previous prime is 63729871. The next prime is 63729937. The reversal of 63729893 is 39892736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63729893 - 2⁶ = 63729829 is a prime.

It is a super-2 number, since 2×63729893² = 8122998523582898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63729863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27371 + ... + 29607.

It is an arithmetic number, because the mean of its divisors is an integer number (8235840).

Almost surely, 2^63729893 is an apocalyptic number.

It is an amenable number.

63729893 is a deficient number, since it is larger than the sum of its proper divisors (2156827).

63729893 is a wasteful number, since it uses less digits than its factorization.

63729893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187.

The product of its digits is 489888, while the sum is 47.

The square root of 63729893 is about 7983.1004628528. The cubic root of 63729893 is about 399.4364835792.

The spelling of 63729893 in words is "sixty-three million, seven hundred twenty-nine thousand, eight hundred ninety-three".