424879639 has 4 divisors (see below), whose sum is σ = 426104424. Its totient is φ = 423654856.

The previous prime is 424879633. The next prime is 424879649. The reversal of 424879639 is 936978424.

It is a happy number.

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 424879639 - 2⁹ = 424879127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424879633) 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, 611872 + ... + 612565.

It is an arithmetic number, because the mean of its divisors is an integer number (106526106).

Almost surely, 2^424879639 is an apocalyptic number.

424879639 is a deficient number, since it is larger than the sum of its proper divisors (1224785).

424879639 is a wasteful number, since it uses less digits than its factorization.

424879639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224784.

The product of its digits is 2612736, while the sum is 52.

The square root of 424879639 is about 20612.6087383427. The cubic root of 424879639 is about 751.7763164267.

It can be divided in two parts, 42 and 4879639, that added together give a 4-th power (4879681 = 47⁴).

The spelling of 424879639 in words is "four hundred twenty-four million, eight hundred seventy-nine thousand, six hundred thirty-nine".