477749969 has 2 divisors, whose sum is σ = 477749970. Its totient is φ = 477749968.

The previous prime is 477749941. The next prime is 477750017. The reversal of 477749969 is 969947774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 462250000 + 15499969 = 21500^2 + 3937^2 .

It is a cyclic number.

It is not a de Polignac number, because 477749969 - 2²⁴ = 460972753 is a prime.

It is a super-2 number, since 2×477749969² = 456490065759001922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (477749269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238874984 + 238874985.

It is an arithmetic number, because the mean of its divisors is an integer number (238874985).

Almost surely, 2^477749969 is an apocalyptic number.

It is an amenable number.

477749969 is a deficient number, since it is larger than the sum of its proper divisors (1).

477749969 is an equidigital number, since it uses as much as digits as its factorization.

477749969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 62.

The square root of 477749969 is about 21857.4922852554. The cubic root of 477749969 is about 781.7481986373.

The spelling of 477749969 in words is "four hundred seventy-seven million, seven hundred forty-nine thousand, nine hundred sixty-nine".