84149549 has 4 divisors (see below), whose sum is σ = 91799520. Its totient is φ = 76499580.

The previous prime is 84149539. The next prime is 84149551. The reversal of 84149549 is 94594148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84149549 - 2⁸ = 84149293 is a prime.

It is a super-2 number, since 2×84149549² = 14162293193806802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84149539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3824969 + ... + 3824990.

It is an arithmetic number, because the mean of its divisors is an integer number (22949880).

Almost surely, 2^84149549 is an apocalyptic number.

It is an amenable number.

84149549 is a deficient number, since it is larger than the sum of its proper divisors (7649971).

84149549 is a wasteful number, since it uses less digits than its factorization.

84149549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7649970.

The product of its digits is 207360, while the sum is 44.

The square root of 84149549 is about 9173.3063286909. The cubic root of 84149549 is about 438.2116617710.

The spelling of 84149549 in words is "eighty-four million, one hundred forty-nine thousand, five hundred forty-nine".