84729451 has 2 divisors, whose sum is σ = 84729452. Its totient is φ = 84729450.

The previous prime is 84729433. The next prime is 84729461. The reversal of 84729451 is 15492748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84729451 - 2¹⁷ = 84598379 is a prime.

It is a super-2 number, since 2×84729451² = 14358159733522802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84729461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42364725 + 42364726.

It is an arithmetic number, because the mean of its divisors is an integer number (42364726).

Almost surely, 2^84729451 is an apocalyptic number.

84729451 is a deficient number, since it is larger than the sum of its proper divisors (1).

84729451 is an equidigital number, since it uses as much as digits as its factorization.

84729451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 84729451 is about 9204.8601836204. The cubic root of 84729451 is about 439.2159781176.

The spelling of 84729451 in words is "eighty-four million, seven hundred twenty-nine thousand, four hundred fifty-one".