140641369 has 4 divisors (see below), whose sum is σ = 153426960. Its totient is φ = 127855780.

The previous prime is 140641351. The next prime is 140641379. The reversal of 140641369 is 963146041.

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 140641369 - 2⁵ = 140641337 is a prime.

It is a super-2 number, since 2×140641369² = 39559989348388322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140641339) 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, 6392779 + ... + 6392800.

It is an arithmetic number, because the mean of its divisors is an integer number (38356740).

Almost surely, 2^140641369 is an apocalyptic number.

It is an amenable number.

140641369 is a deficient number, since it is larger than the sum of its proper divisors (12785591).

140641369 is a wasteful number, since it uses less digits than its factorization.

140641369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785590.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 140641369 is about 11859.2313831884. The cubic root of 140641369 is about 520.0411321014.

The spelling of 140641369 in words is "one hundred forty million, six hundred forty-one thousand, three hundred sixty-nine".