427669913 has 4 divisors (see below), whose sum is σ = 466549008. Its totient is φ = 388790820.

The previous prime is 427669817. The next prime is 427669933. The reversal of 427669913 is 319966724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427669913 - 2⁸ = 427669657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427669933) 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, 19439531 + ... + 19439552.

It is an arithmetic number, because the mean of its divisors is an integer number (116637252).

Almost surely, 2^427669913 is an apocalyptic number.

It is an amenable number.

427669913 is a deficient number, since it is larger than the sum of its proper divisors (38879095).

427669913 is a wasteful number, since it uses less digits than its factorization.

427669913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38879094.

The product of its digits is 489888, while the sum is 47.

The square root of 427669913 is about 20680.1816481384. The cubic root of 427669913 is about 753.4184180706.

The spelling of 427669913 in words is "four hundred twenty-seven million, six hundred sixty-nine thousand, nine hundred thirteen".