140407988 has 24 divisors (see below), whose sum is σ = 286793472. Its totient is φ = 58893984.

The previous prime is 140407987. The next prime is 140407997. The reversal of 140407988 is 889704041.

It is a happy number.

140407988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140407987) 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, 52031 + ... + 54662.

It is an arithmetic number, because the mean of its divisors is an integer number (11949728).

Almost surely, 2^140407988 is an apocalyptic number.

It is an amenable number.

140407988 is an abundant number, since it is smaller than the sum of its proper divisors (146385484).

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

140407988 is a wasteful number, since it uses less digits than its factorization.

140407988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106751 (or 106749 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 140407988 is about 11849.3876635040. The cubic root of 140407988 is about 519.7533198808.

The spelling of 140407988 in words is "one hundred forty million, four hundred seven thousand, nine hundred eighty-eight".