427929538 has 4 divisors (see below), whose sum is σ = 641894310. Its totient is φ = 213964768.

The previous prime is 427929529. The next prime is 427929581. The reversal of 427929538 is 835929724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 412617969 + 15311569 = 20313^2 + 3913^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 427929491 and 427929500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106982383 + ... + 106982386.

Almost surely, 2^427929538 is an apocalyptic number.

427929538 is a deficient number, since it is larger than the sum of its proper divisors (213964772).

427929538 is a wasteful number, since it uses less digits than its factorization.

427929538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213964771.

The product of its digits is 1088640, while the sum is 49.

The square root of 427929538 is about 20686.4578408194. The cubic root of 427929538 is about 753.5708461325.

The spelling of 427929538 in words is "four hundred twenty-seven million, nine hundred twenty-nine thousand, five hundred thirty-eight".