63919471 has 12 divisors (see below), whose sum is σ = 81115560. Its totient is φ = 49806960.

The previous prime is 63919469. The next prime is 63919517. The reversal of 63919471 is 17491936.

It is not a de Polignac number, because 63919471 - 2¹ = 63919469 is a prime.

It is a super-3 number, since 3×63919471³ (a number of 24 digits) contains 333 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 (63919421) 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, 58756 + ... + 59833.

It is an arithmetic number, because the mean of its divisors is an integer number (6759630).

Almost surely, 2^63919471 is an apocalyptic number.

63919471 is a deficient number, since it is larger than the sum of its proper divisors (17196089).

63919471 is a wasteful number, since it uses less digits than its factorization.

63919471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118614 (or 118607 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 63919471 is about 7994.9653532708. The cubic root of 63919471 is about 399.8321608349.

The spelling of 63919471 in words is "sixty-three million, nine hundred nineteen thousand, four hundred seventy-one".