486916921 has 2 divisors, whose sum is σ = 486916922. Its totient is φ = 486916920.

The previous prime is 486916919. The next prime is 486916961. The reversal of 486916921 is 129619684.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307651600 + 179265321 = 17540^2 + 13389^2 .

It is a cyclic number.

It is not a de Polignac number, because 486916921 - 2¹ = 486916919 is a prime.

It is a super-2 number, since 2×486916921² = 474176175912240482, which contains 22 as substring.

Together with 486916919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (486916961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243458460 + 243458461.

It is an arithmetic number, because the mean of its divisors is an integer number (243458461).

Almost surely, 2^486916921 is an apocalyptic number.

It is an amenable number.

486916921 is a deficient number, since it is larger than the sum of its proper divisors (1).

486916921 is an equidigital number, since it uses as much as digits as its factorization.

486916921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 486916921 is about 22066.1940760069. The cubic root of 486916921 is about 786.7165547179.

The spelling of 486916921 in words is "four hundred eighty-six million, nine hundred sixteen thousand, nine hundred twenty-one".