140883981 has 16 divisors (see below), whose sum is σ = 227309184. Its totient is φ = 75769344.

The previous prime is 140883979. The next prime is 140883983. The reversal of 140883981 is 189388041.

It is an interprime number because it is at equal distance from previous prime (140883979) and next prime (140883983).

It is not a de Polignac number, because 140883981 - 2¹ = 140883979 is a prime.

It is a super-2 number, since 2×140883981² = 39696592204816722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140883983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196960 + ... + 197673.

It is an arithmetic number, because the mean of its divisors is an integer number (14206824).

Almost surely, 2^140883981 is an apocalyptic number.

It is an amenable number.

140883981 is a deficient number, since it is larger than the sum of its proper divisors (86425203).

140883981 is a wasteful number, since it uses less digits than its factorization.

140883981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394660.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 140883981 is about 11869.4558004990. The cubic root of 140883981 is about 520.3399909200.

The spelling of 140883981 in words is "one hundred forty million, eight hundred eighty-three thousand, nine hundred eighty-one".