63919893 has 8 divisors (see below), whose sum is σ = 85425088. Its totient is φ = 42513984.

The previous prime is 63919883. The next prime is 63919903. The reversal of 63919893 is 39891936.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63919883) and next prime (63919903).

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

It is not a de Polignac number, because 63919893 - 2⁹ = 63919381 is a prime.

It is a super-2 number, since 2×63919893² = 8171505442262898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63919873) 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, 23305 + ... + 25902.

It is an arithmetic number, because the mean of its divisors is an integer number (10678136).

Almost surely, 2^63919893 is an apocalyptic number.

It is an amenable number.

63919893 is a deficient number, since it is larger than the sum of its proper divisors (21505195).

63919893 is a wasteful number, since it uses less digits than its factorization.

63919893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49643.

The product of its digits is 314928, while the sum is 48.

The square root of 63919893 is about 7994.9917448363. The cubic root of 63919893 is about 399.8330407379.

The spelling of 63919893 in words is "sixty-three million, nine hundred nineteen thousand, eight hundred ninety-three".