63421479 has 12 divisors (see below), whose sum is σ = 99937032. Its totient is φ = 38437200.

The previous prime is 63421469. The next prime is 63421483. The reversal of 63421479 is 97412436.

63421479 is a `hidden beast` number, since 634 + 2 + 14 + 7 + 9 = 666.

It is not a de Polignac number, because 63421479 - 2¹⁷ = 63290407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320212 + ... + 320409.

It is an arithmetic number, because the mean of its divisors is an integer number (8328086).

Almost surely, 2^63421479 is an apocalyptic number.

63421479 is a deficient number, since it is larger than the sum of its proper divisors (36515553).

63421479 is a wasteful number, since it uses less digits than its factorization.

63421479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640638 (or 640635 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 63421479 is about 7963.7603555105. The cubic root of 63421479 is about 398.7910979872.

The spelling of 63421479 in words is "sixty-three million, four hundred twenty-one thousand, four hundred seventy-nine".