63403479 has 20 divisors (see below), whose sum is σ = 98834736. Its totient is φ = 40430016.

The previous prime is 63403477. The next prime is 63403519. The reversal of 63403479 is 97430436.

It is not a de Polignac number, because 63403479 - 2¹ = 63403477 is a prime.

It is a super-2 number, since 2×63403479² = 8040002298606882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63403477) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15154 + ... + 18879.

Almost surely, 2^63403479 is an apocalyptic number.

63403479 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

63403479 is a deficient number, since it is larger than the sum of its proper divisors (35431257).

63403479 is a wasteful number, since it uses less digits than its factorization.

63403479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34068 (or 34059 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 63403479 is about 7962.6301559221. The cubic root of 63403479 is about 398.7533667165.

The spelling of 63403479 in words is "sixty-three million, four hundred three thousand, four hundred seventy-nine".