140729369 has 4 divisors (see below), whose sum is σ = 153522960. Its totient is φ = 127935780.

The previous prime is 140729359. The next prime is 140729377. The reversal of 140729369 is 963927041.

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 a de Polignac number, because none of the positive numbers 2^k-140729369 is a prime.

It is a super-2 number, since 2×140729369² = 39609510598276322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140729339) 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, 6396779 + ... + 6396800.

It is an arithmetic number, because the mean of its divisors is an integer number (38380740).

Almost surely, 2^140729369 is an apocalyptic number.

It is an amenable number.

140729369 is a deficient number, since it is larger than the sum of its proper divisors (12793591).

140729369 is a wasteful number, since it uses less digits than its factorization.

140729369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793590.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 140729369 is about 11862.9409928567. The cubic root of 140729369 is about 520.1495735897.

The spelling of 140729369 in words is "one hundred forty million, seven hundred twenty-nine thousand, three hundred sixty-nine".