861957463 has 2 divisors, whose sum is σ = 861957464. Its totient is φ = 861957462.

The previous prime is 861957451. The next prime is 861957539. The reversal of 861957463 is 364759168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861957463 - 2¹³ = 861949271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861957413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430978731 + 430978732.

It is an arithmetic number, because the mean of its divisors is an integer number (430978732).

Almost surely, 2^861957463 is an apocalyptic number.

861957463 is a deficient number, since it is larger than the sum of its proper divisors (1).

861957463 is an equidigital number, since it uses as much as digits as its factorization.

861957463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 861957463 is about 29359.1120948846. The cubic root of 861957463 is about 951.6895006839.

The spelling of 861957463 in words is "eight hundred sixty-one million, nine hundred fifty-seven thousand, four hundred sixty-three".