12400739629 has 4 divisors (see below), whose sum is σ = 12800763520. Its totient is φ = 12000715740.

The previous prime is 12400739627. The next prime is 12400739683. The reversal of 12400739629 is 92693700421.

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 12400739629 - 2¹ = 12400739627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400739623) 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, 200011899 + ... + 200011960.

It is an arithmetic number, because the mean of its divisors is an integer number (3200190880).

Almost surely, 2^12400739629 is an apocalyptic number.

It is an amenable number.

12400739629 is a deficient number, since it is larger than the sum of its proper divisors (400023891).

12400739629 is an equidigital number, since it uses as much as digits as its factorization.

12400739629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400023890.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 12400739629 in words is "twelve billion, four hundred million, seven hundred thirty-nine thousand, six hundred twenty-nine".