854121487 has 2 divisors, whose sum is σ = 854121488. Its totient is φ = 854121486.

The previous prime is 854121403. The next prime is 854121509. The reversal of 854121487 is 784121458.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-854121487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854124487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427060743 + 427060744.

It is an arithmetic number, because the mean of its divisors is an integer number (427060744).

Almost surely, 2^854121487 is an apocalyptic number.

854121487 is a deficient number, since it is larger than the sum of its proper divisors (1).

854121487 is an equidigital number, since it uses as much as digits as its factorization.

854121487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71680, while the sum is 40.

The square root of 854121487 is about 29225.3569182653. The cubic root of 854121487 is about 948.7968099327.

The spelling of 854121487 in words is "eight hundred fifty-four million, one hundred twenty-one thousand, four hundred eighty-seven".