140097947 has 8 divisors (see below), whose sum is σ = 156965232. Its totient is φ = 123919200.

The previous prime is 140097931. The next prime is 140097949. The reversal of 140097947 is 749790041.

It is a happy number.

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 140097947 - 2⁴ = 140097931 is a prime.

It is a super-2 number, since 2×140097947² = 39254869507229618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140097949) 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, 171704 + ... + 172517.

It is an arithmetic number, because the mean of its divisors is an integer number (19620654).

Almost surely, 2^140097947 is an apocalyptic number.

140097947 is a deficient number, since it is larger than the sum of its proper divisors (16867285).

140097947 is a wasteful number, since it uses less digits than its factorization.

140097947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344269.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 140097947 is about 11836.2978587057. The cubic root of 140097947 is about 519.3704746278.

The spelling of 140097947 in words is "one hundred forty million, ninety-seven thousand, nine hundred forty-seven".