140388029 has 4 divisors (see below), whose sum is σ = 140705376. Its totient is φ = 140070684.

The previous prime is 140388019. The next prime is 140388037. The reversal of 140388029 is 920883041.

It is a happy number.

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-140388029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140388029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140388019) 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, 158009 + ... + 158894.

It is an arithmetic number, because the mean of its divisors is an integer number (35176344).

Almost surely, 2^140388029 is an apocalyptic number.

It is an amenable number.

140388029 is a deficient number, since it is larger than the sum of its proper divisors (317347).

140388029 is an equidigital number, since it uses as much as digits as its factorization.

140388029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317346.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 140388029 is about 11848.5454381540. The cubic root of 140388029 is about 519.7286910634.

The spelling of 140388029 in words is "one hundred forty million, three hundred eighty-eight thousand, twenty-nine".