864626479 has 2 divisors, whose sum is σ = 864626480. Its totient is φ = 864626478.

The previous prime is 864626467. The next prime is 864626489. The reversal of 864626479 is 974626468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864626479 - 2²⁷ = 730408751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864626459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432313239 + 432313240.

It is an arithmetic number, because the mean of its divisors is an integer number (432313240).

Almost surely, 2^864626479 is an apocalyptic number.

864626479 is a deficient number, since it is larger than the sum of its proper divisors (1).

864626479 is an equidigital number, since it uses as much as digits as its factorization.

864626479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 52.

The square root of 864626479 is about 29404.5316065398. The cubic root of 864626479 is about 952.6707777455.

The spelling of 864626479 in words is "eight hundred sixty-four million, six hundred twenty-six thousand, four hundred seventy-nine".