140940408 has 32 divisors (see below), whose sum is σ = 402687360. Its totient is φ = 40268640.

The previous prime is 140940407. The next prime is 140940469. The reversal of 140940408 is 804049041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140940407) 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, 419298 + ... + 419633.

It is an arithmetic number, because the mean of its divisors is an integer number (12583980).

Almost surely, 2^140940408 is an apocalyptic number.

It is an amenable number.

140940408 is an abundant number, since it is smaller than the sum of its proper divisors (261746952).

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

140940408 is a wasteful number, since it uses less digits than its factorization.

140940408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838947 (or 838943 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 140940408 is about 11871.8325459888. The cubic root of 140940408 is about 520.4094506873.

Adding to 140940408 its reverse (804049041), we get a palindrome (944989449).

The spelling of 140940408 in words is "one hundred forty million, nine hundred forty thousand, four hundred eight".