84169261 has 8 divisors (see below), whose sum is σ = 97222464. Its totient is φ = 72016320.

The previous prime is 84169249. The next prime is 84169271. The reversal of 84169261 is 16296148.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84169261 is a prime.

It is a super-2 number, since 2×84169261² = 14168928994572242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84169261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84169271) 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, 224865 + ... + 225238.

It is an arithmetic number, because the mean of its divisors is an integer number (12152808).

Almost surely, 2^84169261 is an apocalyptic number.

It is an amenable number.

84169261 is a deficient number, since it is larger than the sum of its proper divisors (13053203).

84169261 is a wasteful number, since it uses less digits than its factorization.

84169261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450131.

The product of its digits is 20736, while the sum is 37.

The square root of 84169261 is about 9174.3806875451. The cubic root of 84169261 is about 438.2458760715.

It can be divided in two parts, 841692 and 61, that added together give a triangular number (841753 = T₁₂₉₇).

The spelling of 84169261 in words is "eighty-four million, one hundred sixty-nine thousand, two hundred sixty-one".