140226997 has 4 divisors (see below), whose sum is σ = 140267296. Its totient is φ = 140186700.

The previous prime is 140226979. The next prime is 140227001. The reversal of 140226997 is 799622041.

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 140226997 - 2⁷ = 140226869 is a prime.

It is a super-2 number, since 2×140226997² = 39327221375276018, 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 (140226937) 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, 14379 + ... + 22072.

It is an arithmetic number, because the mean of its divisors is an integer number (35066824).

Almost surely, 2^140226997 is an apocalyptic number.

It is an amenable number.

140226997 is a deficient number, since it is larger than the sum of its proper divisors (40299).

140226997 is an equidigital number, since it uses as much as digits as its factorization.

140226997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40298.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 140226997 is about 11841.7480550804. The cubic root of 140226997 is about 519.5298968795.

The spelling of 140226997 in words is "one hundred forty million, two hundred twenty-six thousand, nine hundred ninety-seven".