140263989 has 8 divisors (see below), whose sum is σ = 187442592. Its totient is φ = 93297360.

The previous prime is 140263973. The next prime is 140263999. The reversal of 140263989 is 989362041.

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

It is not a de Polignac number, because 140263989 - 2⁴ = 140263973 is a prime.

It is a super-2 number, since 2×140263989² = 39347973220384242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140263989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140263919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51442 + ... + 54099.

It is an arithmetic number, because the mean of its divisors is an integer number (23430324).

Almost surely, 2^140263989 is an apocalyptic number.

It is an amenable number.

140263989 is a deficient number, since it is larger than the sum of its proper divisors (47178603).

140263989 is a wasteful number, since it uses less digits than its factorization.

140263989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105987.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 140263989 is about 11843.3098836432. The cubic root of 140263989 is about 519.5755770045.

The spelling of 140263989 in words is "one hundred forty million, two hundred sixty-three thousand, nine hundred eighty-nine".