140408307 has 24 divisors (see below), whose sum is σ = 227913504. Its totient is φ = 82646784.

The previous prime is 140408293. The next prime is 140408311. The reversal of 140408307 is 703804041.

It is not a de Polignac number, because 140408307 - 2⁴ = 140408291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140408327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23398 + ... + 28779.

It is an arithmetic number, because the mean of its divisors is an integer number (9496396).

Almost surely, 2^140408307 is an apocalyptic number.

140408307 is a deficient number, since it is larger than the sum of its proper divisors (87505197).

140408307 is a wasteful number, since it uses less digits than its factorization.

140408307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52219 (or 52216 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 140408307 is about 11849.4011241075. The cubic root of 140408307 is about 519.7537134985.

It can be divided in two parts, 140408 and 307, that added together give a triangular number (140715 = T₅₃₀).

The spelling of 140408307 in words is "one hundred forty million, four hundred eight thousand, three hundred seven".