475645749 has 8 divisors (see below), whose sum is σ = 635777472. Its totient is φ = 316305600.

The previous prime is 475645721. The next prime is 475645759. The reversal of 475645749 is 947546574.

It is a happy number.

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

It is not a de Polignac number, because 475645749 - 2⁹ = 475645237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475645759) 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, 196489 + ... + 198894.

It is an arithmetic number, because the mean of its divisors is an integer number (79472184).

Almost surely, 2^475645749 is an apocalyptic number.

It is an amenable number.

475645749 is a deficient number, since it is larger than the sum of its proper divisors (160131723).

475645749 is a wasteful number, since it uses less digits than its factorization.

475645749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395787.

The product of its digits is 4233600, while the sum is 51.

The square root of 475645749 is about 21809.3041842238. The cubic root of 475645749 is about 780.5987890545.

It can be divided in two parts, 4756 and 45749, that added together give a palindrome (50505).

The spelling of 475645749 in words is "four hundred seventy-five million, six hundred forty-five thousand, seven hundred forty-nine".