140909388 has 24 divisors (see below), whose sum is σ = 329404992. Its totient is φ = 46881744.

The previous prime is 140909371. The next prime is 140909389. The reversal of 140909388 is 883909041.

It is not an unprimeable number, because it can be changed into a prime (140909389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4170 + ... + 17297.

It is an arithmetic number, because the mean of its divisors is an integer number (13725208).

Almost surely, 2^140909388 is an apocalyptic number.

It is an amenable number.

140909388 is an abundant number, since it is smaller than the sum of its proper divisors (188495604).

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

140909388 is a wasteful number, since it uses less digits than its factorization.

140909388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22021 (or 22019 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 140909388 is about 11870.5260203582. The cubic root of 140909388 is about 520.3712683901.

The spelling of 140909388 in words is "one hundred forty million, nine hundred nine thousand, three hundred eighty-eight".