84925309 has 16 divisors (see below), whose sum is σ = 99792000. Its totient is φ = 70755840.

The previous prime is 84925303. The next prime is 84925331. The reversal of 84925309 is 90352948.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 84925309 - 2⁵ = 84925277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84925303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142917 + ... + 143509.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^84925309 is an apocalyptic number.

It is an amenable number.

84925309 is a deficient number, since it is larger than the sum of its proper divisors (14866691).

84925309 is a wasteful number, since it uses less digits than its factorization.

84925309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 84925309 is about 9215.4928788427. The cubic root of 84925309 is about 439.5541437478.

The spelling of 84925309 in words is "eighty-four million, nine hundred twenty-five thousand, three hundred nine".