140908381 has 8 divisors (see below), whose sum is σ = 141972480. Its totient is φ = 139848672.

The previous prime is 140908357. The next prime is 140908399. The reversal of 140908381 is 183809041.

It is a happy number.

140908381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140908381 - 2⁷ = 140908253 is a prime.

It is a super-2 number, since 2×140908381² = 39710343672082322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140908081) 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, 88450 + ... + 90028.

It is an arithmetic number, because the mean of its divisors is an integer number (17746560).

Almost surely, 2^140908381 is an apocalyptic number.

It is an amenable number.

140908381 is a deficient number, since it is larger than the sum of its proper divisors (1064099).

140908381 is a wasteful number, since it uses less digits than its factorization.

140908381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 140908381 is about 11870.4836043019. The cubic root of 140908381 is about 520.3700287871.

The spelling of 140908381 in words is "one hundred forty million, nine hundred eight thousand, three hundred eighty-one".