63449279 has 4 divisors (see below), whose sum is σ = 63629376. Its totient is φ = 63269184.

The previous prime is 63449273. The next prime is 63449291. The reversal of 63449279 is 97294436.

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 63449279 - 2¹² = 63445183 is a prime.

It is a super-2 number, since 2×63449279² = 8051622011239682, which contains 22 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 (63449273) 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, 89519 + ... + 90224.

It is an arithmetic number, because the mean of its divisors is an integer number (15907344).

Almost surely, 2^63449279 is an apocalyptic number.

63449279 is a deficient number, since it is larger than the sum of its proper divisors (180097).

63449279 is a wasteful number, since it uses less digits than its factorization.

63449279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180096.

The product of its digits is 326592, while the sum is 44.

The square root of 63449279 is about 7965.5055708976. The cubic root of 63449279 is about 398.8493578135.

The spelling of 63449279 in words is "sixty-three million, four hundred forty-nine thousand, two hundred seventy-nine".