84409425 has 48 divisors (see below), whose sum is σ = 161834880. Its totient is φ = 43053120.

The previous prime is 84409417. The next prime is 84409439. The reversal of 84409425 is 52490448.

It is not a de Polignac number, because 84409425 - 2³ = 84409417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84409425.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12807 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (3371560).

Almost surely, 2^84409425 is an apocalyptic number.

It is an amenable number.

84409425 is a deficient number, since it is larger than the sum of its proper divisors (77425455).

84409425 is a wasteful number, since it uses less digits than its factorization.

84409425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479 (or 5468 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 84409425 is about 9187.4602039954. The cubic root of 84409425 is about 438.6623025832.

The spelling of 84409425 in words is "eighty-four million, four hundred nine thousand, four hundred twenty-five".