424979479 has 4 divisors (see below), whose sum is σ = 447346840. Its totient is φ = 402612120.

The previous prime is 424979461. The next prime is 424979483. The reversal of 424979479 is 974979424.

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 424979479 - 2¹⁹ = 424455191 is a prime.

It is a super-2 number, since 2×424979479² = 361215115142222882, 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 (424970479) 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, 11183652 + ... + 11183689.

It is an arithmetic number, because the mean of its divisors is an integer number (111836710).

Almost surely, 2^424979479 is an apocalyptic number.

424979479 is a deficient number, since it is larger than the sum of its proper divisors (22367361).

424979479 is a wasteful number, since it uses less digits than its factorization.

424979479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22367360.

The product of its digits is 4572288, while the sum is 55.

The square root of 424979479 is about 20615.0304147241. The cubic root of 424979479 is about 751.8351969992.

Subtracting from 424979479 its sum of digits (55), we obtain a palindrome (424979424).

Subtracting 424979479 from its reverse (974979424), we obtain a palindrome (549999945).

The spelling of 424979479 in words is "four hundred twenty-four million, nine hundred seventy-nine thousand, four hundred seventy-nine".