3400378391 has 8 divisors (see below), whose sum is σ = 3438887424. Its totient is φ = 3362052960.

The previous prime is 3400378367. The next prime is 3400378393. The reversal of 3400378391 is 1938730043.

3400378391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3400378391 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 (3400378393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8480 + ... + 82901.

It is an arithmetic number, because the mean of its divisors is an integer number (429860928).

Almost surely, 2^3400378391 is an apocalyptic number.

3400378391 is a deficient number, since it is larger than the sum of its proper divisors (38509033).

3400378391 is a wasteful number, since it uses less digits than its factorization.

3400378391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91801.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 3400378391 is about 58312.7635342384. The cubic root of 3400378391 is about 1503.7503769300.

The spelling of 3400378391 in words is "three billion, four hundred million, three hundred seventy-eight thousand, three hundred ninety-one".