858472457 has 2 divisors, whose sum is σ = 858472458. Its totient is φ = 858472456.

The previous prime is 858472453. The next prime is 858472463. The reversal of 858472457 is 754274858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854743696 + 3728761 = 29236^2 + 1931^2 .

It is a cyclic number.

It is not a de Polignac number, because 858472457 - 2² = 858472453 is a prime.

It is not a weakly prime, because it can be changed into another prime (858472451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429236228 + 429236229.

It is an arithmetic number, because the mean of its divisors is an integer number (429236229).

Almost surely, 2^858472457 is an apocalyptic number.

It is an amenable number.

858472457 is a deficient number, since it is larger than the sum of its proper divisors (1).

858472457 is an equidigital number, since it uses as much as digits as its factorization.

858472457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2508800, while the sum is 50.

The square root of 858472457 is about 29299.7006298699. The cubic root of 858472457 is about 950.4051667875.

The spelling of 858472457 in words is "eight hundred fifty-eight million, four hundred seventy-two thousand, four hundred fifty-seven".