69399240 has 32 divisors (see below), whose sum is σ = 208198080. Its totient is φ = 18506432.

The previous prime is 69399199. The next prime is 69399247. The reversal of 69399240 is 4299396.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 69399192 and 69399201.

It is not an unprimeable number, because it can be changed into a prime (69399247) 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, 289044 + ... + 289283.

It is an arithmetic number, because the mean of its divisors is an integer number (6506190).

Almost surely, 2^69399240 is an apocalyptic number.

69399240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69399240 is an abundant number, since it is smaller than the sum of its proper divisors (138798840).

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

69399240 is a wasteful number, since it uses less digits than its factorization.

69399240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578341 (or 578337 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 69399240 is about 8330.6206251395. The cubic root of 69399240 is about 410.9461393655.

The spelling of 69399240 in words is "sixty-nine million, three hundred ninety-nine thousand, two hundred forty".