3400431329 has 4 divisors (see below), whose sum is σ = 3448324800. Its totient is φ = 3352537860.

The previous prime is 3400431301. The next prime is 3400431347. The reversal of 3400431329 is 9231340043.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9231340043 = 20051 ⋅460393.

It is a cyclic number.

It is not a de Polignac number, because 3400431329 - 2²⁸ = 3131995873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3400431029) 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, 23946629 + ... + 23946770.

It is an arithmetic number, because the mean of its divisors is an integer number (862081200).

Almost surely, 2^3400431329 is an apocalyptic number.

It is an amenable number.

3400431329 is a deficient number, since it is larger than the sum of its proper divisors (47893471).

3400431329 is an equidigital number, since it uses as much as digits as its factorization.

3400431329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47893470.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 3400431329 is about 58313.2174468190. The cubic root of 3400431329 is about 1503.7581804855.

The spelling of 3400431329 in words is "three billion, four hundred million, four hundred thirty-one thousand, three hundred twenty-nine".