427738405 has 8 divisors (see below), whose sum is σ = 521700984. Its totient is φ = 336580800.

The previous prime is 427738397. The next prime is 427738427. The reversal of 427738405 is 504837724.

It can be written as a sum of positive squares in 4 ways, for example, as 1481089 + 426257316 = 1217^2 + 20646^2 .

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

It is not a de Polignac number, because 427738405 - 2³ = 427738397 is a prime.

It is a super-2 number, since 2×427738405² = 365920286223888050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700906 + ... + 701515.

It is an arithmetic number, because the mean of its divisors is an integer number (65212623).

Almost surely, 2^427738405 is an apocalyptic number.

It is an amenable number.

427738405 is a deficient number, since it is larger than the sum of its proper divisors (93962579).

427738405 is a wasteful number, since it uses less digits than its factorization.

427738405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402487.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 427738405 is about 20681.8375634275. The cubic root of 427738405 is about 753.4586362998.

The spelling of 427738405 in words is "four hundred twenty-seven million, seven hundred thirty-eight thousand, four hundred five".