3994926490 has 8 divisors (see below), whose sum is σ = 7190867700. Its totient is φ = 1597970592.

The previous prime is 3994926487. The next prime is 3994926497. The reversal of 3994926490 is 946294993.

It can be written as a sum of positive squares in 2 ways, for example, as 3661097049 + 333829441 = 60507^2 + 18271^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3994926497) 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, 199746315 + ... + 199746334.

Almost surely, 2^3994926490 is an apocalyptic number.

3994926490 is a deficient number, since it is larger than the sum of its proper divisors (3195941210).

3994926490 is a wasteful number, since it uses less digits than its factorization.

3994926490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399492656.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The square root of 3994926490 is about 63205.4308584318. The cubic root of 3994926490 is about 1586.7296267553.

The spelling of 3994926490 in words is "three billion, nine hundred ninety-four million, nine hundred twenty-six thousand, four hundred ninety".