63129464 has 8 divisors (see below), whose sum is σ = 118367760. Its totient is φ = 31564728.

The previous prime is 63129439. The next prime is 63129467. The reversal of 63129464 is 46492136.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63129467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3945584 + ... + 3945599.

It is an arithmetic number, because the mean of its divisors is an integer number (14795970).

Almost surely, 2^63129464 is an apocalyptic number.

It is an amenable number.

63129464 is a deficient number, since it is larger than the sum of its proper divisors (55238296).

63129464 is a wasteful number, since it uses less digits than its factorization.

63129464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7891189 (or 7891185 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 63129464 is about 7945.4052130776. The cubic root of 63129464 is about 398.1780976115.

The spelling of 63129464 in words is "sixty-three million, one hundred twenty-nine thousand, four hundred sixty-four".