84629261 has 2 divisors, whose sum is σ = 84629262. Its totient is φ = 84629260.

The previous prime is 84629257. The next prime is 84629263. The reversal of 84629261 is 16292648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51566761 + 33062500 = 7181^2 + 5750^2 .

It is a cyclic number.

It is not a de Polignac number, because 84629261 - 2² = 84629257 is a prime.

It is a super-2 number, since 2×84629261² = 14324223634812242, which contains 22 as substring.

Together with 84629263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84629263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42314630 + 42314631.

It is an arithmetic number, because the mean of its divisors is an integer number (42314631).

Almost surely, 2^84629261 is an apocalyptic number.

It is an amenable number.

84629261 is a deficient number, since it is larger than the sum of its proper divisors (1).

84629261 is an equidigital number, since it uses as much as digits as its factorization.

84629261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 84629261 is about 9199.4163401816. The cubic root of 84629261 is about 439.0427899892.

The spelling of 84629261 in words is "eighty-four million, six hundred twenty-nine thousand, two hundred sixty-one".