69944140 has 24 divisors (see below), whose sum is σ = 167866272. Its totient is φ = 23980800.

The previous prime is 69944129. The next prime is 69944141. The reversal of 69944140 is 4144996.

It is a self number, because there is not a number n which added to its sum of digits gives 69944140.

It is not an unprimeable number, because it can be changed into a prime (69944141) 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 7 ways as a sum of consecutive naturals, for example, 249661 + ... + 249940.

It is an arithmetic number, because the mean of its divisors is an integer number (6994428).

Almost surely, 2^69944140 is an apocalyptic number.

It is an amenable number.

69944140 is an abundant number, since it is smaller than the sum of its proper divisors (97922132).

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

69944140 is a wasteful number, since it uses less digits than its factorization.

69944140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499617 (or 499615 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 69944140 is about 8363.2613255835. The cubic root of 69944140 is about 412.0188746184.

The spelling of 69944140 in words is "sixty-nine million, nine hundred forty-four thousand, one hundred forty".