477749369 has 2 divisors, whose sum is σ = 477749370. Its totient is φ = 477749368.

The previous prime is 477749359. The next prime is 477749381. The reversal of 477749369 is 963947774.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467121769 + 10627600 = 21613^2 + 3260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477749369 is a prime.

It is a super-2 number, since 2×477749369² = 456488919159796322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (477749309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238874684 + 238874685.

It is an arithmetic number, because the mean of its divisors is an integer number (238874685).

Almost surely, 2^477749369 is an apocalyptic number.

It is an amenable number.

477749369 is a deficient number, since it is larger than the sum of its proper divisors (1).

477749369 is an equidigital number, since it uses as much as digits as its factorization.

477749369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8001504, while the sum is 56.

The square root of 477749369 is about 21857.4785599803. The cubic root of 477749369 is about 781.7478713746.

The spelling of 477749369 in words is "four hundred seventy-seven million, seven hundred forty-nine thousand, three hundred sixty-nine".