69870444 has 48 divisors (see below), whose sum is σ = 188697600. Its totient is φ = 19708416.

The previous prime is 69870443. The next prime is 69870469. The reversal of 69870444 is 44407896.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 69870396 and 69870405.

It is not an unprimeable number, because it can be changed into a prime (69870443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1372 + ... + 11900.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^69870444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69870444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94348800).

69870444 is an abundant number, since it is smaller than the sum of its proper divisors (118827156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69870444 is a wasteful number, since it uses less digits than its factorization.

69870444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622 (or 10620 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 69870444 is about 8358.8542277037. The cubic root of 69870444 is about 411.8741171327.

The spelling of 69870444 in words is "sixty-nine million, eight hundred seventy thousand, four hundred forty-four".