427320445 has 8 divisors (see below), whose sum is σ = 512908344. Its totient is φ = 341773824.

The previous prime is 427320419. The next prime is 427320457. The reversal of 427320445 is 544023724.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23551609 + 403768836 = 4853^2 + 20094^2 .

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 427320445 - 2⁹ = 427319933 is a prime.

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, 21237 + ... + 36133.

It is an arithmetic number, because the mean of its divisors is an integer number (64113543).

Almost surely, 2^427320445 is an apocalyptic number.

It is an amenable number.

427320445 is a deficient number, since it is larger than the sum of its proper divisors (85587899).

427320445 is a wasteful number, since it uses less digits than its factorization.

427320445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20639.

The product of its (nonzero) digits is 26880, while the sum is 31.

The square root of 427320445 is about 20671.7305758371. The cubic root of 427320445 is about 753.2131449778.

The spelling of 427320445 in words is "four hundred twenty-seven million, three hundred twenty thousand, four hundred forty-five".