140808069 has 24 divisors (see below), whose sum is σ = 217620000. Its totient is φ = 87467040.

The previous prime is 140808067. The next prime is 140808091. The reversal of 140808069 is 960808041.

It is a happy number.

It is not a de Polignac number, because 140808069 - 2¹ = 140808067 is a prime.

It is a super-2 number, since 2×140808069² = 39653824591017522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140808061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3682 + ... + 17180.

It is an arithmetic number, because the mean of its divisors is an integer number (9067500).

Almost surely, 2^140808069 is an apocalyptic number.

140808069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

140808069 is a deficient number, since it is larger than the sum of its proper divisors (76811931).

140808069 is a wasteful number, since it uses less digits than its factorization.

140808069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13585 (or 13582 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 140808069 is about 11866.2575819000. The cubic root of 140808069 is about 520.2465164981.

The spelling of 140808069 in words is "one hundred forty million, eight hundred eight thousand, sixty-nine".