140192409 has 32 divisors (see below), whose sum is σ = 222243840. Its totient is φ = 76910400.

The previous prime is 140192369. The next prime is 140192441. The reversal of 140192409 is 904291041.

It is not a de Polignac number, because 140192409 - 2¹¹ = 140190361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140192449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127954 + ... + 129044.

It is an arithmetic number, because the mean of its divisors is an integer number (6945120).

Almost surely, 2^140192409 is an apocalyptic number.

It is an amenable number.

140192409 is a deficient number, since it is larger than the sum of its proper divisors (82051431).

140192409 is a wasteful number, since it uses less digits than its factorization.

140192409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 140192409 is about 11840.2875387382. The cubic root of 140192409 is about 519.4871781019.

The spelling of 140192409 in words is "one hundred forty million, one hundred ninety-two thousand, four hundred nine".