427621279 has 8 divisors (see below), whose sum is σ = 434419040. Its totient is φ = 420876000.

The previous prime is 427621273. The next prime is 427621291. The reversal of 427621279 is 972126724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 427621279 - 2⁷ = 427621151 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 (427621273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3469 + ... + 29449.

It is an arithmetic number, because the mean of its divisors is an integer number (54302380).

Almost surely, 2^427621279 is an apocalyptic number.

427621279 is a deficient number, since it is larger than the sum of its proper divisors (6797761).

427621279 is a wasteful number, since it uses less digits than its factorization.

427621279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26241.

The product of its digits is 84672, while the sum is 40.

The square root of 427621279 is about 20679.0057546295. The cubic root of 427621279 is about 753.3898577726.

Subtracting 427621279 from its reverse (972126724), we obtain a palindrome (544505445).

The spelling of 427621279 in words is "four hundred twenty-seven million, six hundred twenty-one thousand, two hundred seventy-nine".