63494999 has 4 divisors (see below), whose sum is σ = 63591720. Its totient is φ = 63398280.

The previous prime is 63494953. The next prime is 63495011. The reversal of 63494999 is 99949436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63494999 - 2¹⁶ = 63429463 is a prime.

It is a super-2 number, since 2×63494999² = 8063229796020002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63494999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63494399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47369 + ... + 48690.

It is an arithmetic number, because the mean of its divisors is an integer number (15897930).

Almost surely, 2^63494999 is an apocalyptic number.

63494999 is a deficient number, since it is larger than the sum of its proper divisors (96721).

63494999 is an equidigital number, since it uses as much as digits as its factorization.

63494999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96720.

The product of its digits is 1889568, while the sum is 53.

The square root of 63494999 is about 7968.3749284280. The cubic root of 63494999 is about 398.9451351793.

The spelling of 63494999 in words is "sixty-three million, four hundred ninety-four thousand, nine hundred ninety-nine".