469978057 has 2 divisors, whose sum is σ = 469978058. Its totient is φ = 469978056.

The previous prime is 469978049. The next prime is 469978079. The reversal of 469978057 is 750879964.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 461562256 + 8415801 = 21484^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 469978057 - 2³ = 469978049 is a prime.

It is a super-2 number, since 2×469978057² = 441758748122990498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 469977989 and 469978007.

It is not a weakly prime, because it can be changed into another prime (469978007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234989028 + 234989029.

It is an arithmetic number, because the mean of its divisors is an integer number (234989029).

Almost surely, 2^469978057 is an apocalyptic number.

It is an amenable number.

469978057 is a deficient number, since it is larger than the sum of its proper divisors (1).

469978057 is an equidigital number, since it uses as much as digits as its factorization.

469978057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 469978057 is about 21678.9773052144. The cubic root of 469978057 is about 777.4859098021.

The spelling of 469978057 in words is "four hundred sixty-nine million, nine hundred seventy-eight thousand, fifty-seven".