477278749 has 6 divisors (see below), whose sum is σ = 487651934. Its totient is φ = 467121720.

The previous prime is 477278731. The next prime is 477278761. The reversal of 477278749 is 947872774.

It can be written as a sum of positive squares in only one way, i.e., 371332900 + 105945849 = 19270^2 + 10293^2 .

It is not a de Polignac number, because 477278749 - 2⁵ = 477278717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 477278749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477278149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105822 + ... + 110239.

Almost surely, 2^477278749 is an apocalyptic number.

It is an amenable number.

477278749 is a deficient number, since it is larger than the sum of its proper divisors (10373185).

477278749 is an equidigital number, since it uses as much as digits as its factorization.

477278749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216155 (or 216108 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 55.

The square root of 477278749 is about 21846.7102557799. The cubic root of 477278749 is about 781.4910930451.

It can be divided in two parts, 4772 and 78749, that added together give a 4-th power (83521 = 17⁴).

The spelling of 477278749 in words is "four hundred seventy-seven million, two hundred seventy-eight thousand, seven hundred forty-nine".