84999949 has 8 divisors (see below), whose sum is σ = 92093760. Its totient is φ = 78138816.

The previous prime is 84999931. The next prime is 84999979. The reversal of 84999949 is 94999948.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84999949 - 2¹¹ = 84997901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84999979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57409 + ... + 58870.

It is an arithmetic number, because the mean of its divisors is an integer number (11511720).

Almost surely, 2^84999949 is an apocalyptic number.

It is an amenable number.

84999949 is a deficient number, since it is larger than the sum of its proper divisors (7093811).

84999949 is a wasteful number, since it uses less digits than its factorization.

84999949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116339.

The product of its digits is 7558272, while the sum is 61.

The square root of 84999949 is about 9219.5416914291. The cubic root of 84999949 is about 439.6828792792.

Subtracting 84999949 from its reverse (94999948), we obtain a palindrome (9999999).

It can be divided in two parts, 84999 and 949, that multiplied together give a triangular number (80664051 = T₁₂₇₀₁).

The spelling of 84999949 in words is "eighty-four million, nine hundred ninety-nine thousand, nine hundred forty-nine".