140964981 has 4 divisors (see below), whose sum is σ = 187953312. Its totient is φ = 93976652.

The previous prime is 140964979. The next prime is 140964991. The reversal of 140964981 is 189469041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140964981 - 2¹ = 140964979 is a prime.

It is a super-3 number, since 3×140964981³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140964991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23494161 + ... + 23494166.

It is an arithmetic number, because the mean of its divisors is an integer number (46988328).

Almost surely, 2^140964981 is an apocalyptic number.

It is an amenable number.

140964981 is a deficient number, since it is larger than the sum of its proper divisors (46988331).

140964981 is an equidigital number, since it uses as much as digits as its factorization.

140964981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46988330.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 140964981 is about 11872.8674295639. The cubic root of 140964981 is about 520.4396934414.

The spelling of 140964981 in words is "one hundred forty million, nine hundred sixty-four thousand, nine hundred eighty-one".