84435961 has 16 divisors (see below), whose sum is σ = 90073984. Its totient is φ = 79035264.

The previous prime is 84435959. The next prime is 84436007. The reversal of 84435961 is 16953448.

It is a cyclic number.

It is not a de Polignac number, because 84435961 - 2¹ = 84435959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84435931) 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 in 15 ways as a sum of consecutive naturals, for example, 115780 + ... + 116506.

It is an arithmetic number, because the mean of its divisors is an integer number (5629624).

Almost surely, 2^84435961 is an apocalyptic number.

It is an amenable number.

84435961 is a deficient number, since it is larger than the sum of its proper divisors (5638023).

84435961 is a wasteful number, since it uses less digits than its factorization.

84435961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its digits is 103680, while the sum is 40.

The square root of 84435961 is about 9188.9042328234. The cubic root of 84435961 is about 438.7082655519.

The spelling of 84435961 in words is "eighty-four million, four hundred thirty-five thousand, nine hundred sixty-one".