846478877 has 2 divisors, whose sum is σ = 846478878. Its totient is φ = 846478876.

The previous prime is 846478811. The next prime is 846478889. The reversal of 846478877 is 778874648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844134916 + 2343961 = 29054^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 846478877 - 2⁸ = 846478621 is a prime.

It is a super-2 number, since 2×846478877² = 1433052978414362258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (846478277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423239438 + 423239439.

It is an arithmetic number, because the mean of its divisors is an integer number (423239439).

Almost surely, 2^846478877 is an apocalyptic number.

It is an amenable number.

846478877 is a deficient number, since it is larger than the sum of its proper divisors (1).

846478877 is an equidigital number, since it uses as much as digits as its factorization.

846478877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16859136, while the sum is 59.

The square root of 846478877 is about 29094.3100450930. The cubic root of 846478877 is about 945.9584080482.

The spelling of 846478877 in words is "eight hundred forty-six million, four hundred seventy-eight thousand, eight hundred seventy-seven".