3940400067 has 16 divisors (see below), whose sum is σ = 5303506080. Its totient is φ = 2602225152.

The previous prime is 3940400041. The next prime is 3940400069. The reversal of 3940400067 is 7600040493.

It is not a de Polignac number, because 3940400067 - 2⁸ = 3940399811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3940400069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130059 + ... + 157467.

It is an arithmetic number, because the mean of its divisors is an integer number (331469130).

Almost surely, 2^3940400067 is an apocalyptic number.

3940400067 is a deficient number, since it is larger than the sum of its proper divisors (1363106013).

3940400067 is a wasteful number, since it uses less digits than its factorization.

3940400067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27862.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 3940400067 is about 62772.6060236470. The cubic root of 3940400067 is about 1579.4774839788.

The spelling of 3940400067 in words is "three billion, nine hundred forty million, four hundred thousand, sixty-seven".