3890402006 has 4 divisors (see below), whose sum is σ = 5835603012. Its totient is φ = 1945201002.

The previous prime is 3890401993. The next prime is 3890402023. The reversal of 3890402006 is 6002040983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6002040983 = 7879 ⋅761777.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972600500 + ... + 972600503.

It is an arithmetic number, because the mean of its divisors is an integer number (1458900753).

Almost surely, 2^3890402006 is an apocalyptic number.

3890402006 is a deficient number, since it is larger than the sum of its proper divisors (1945201006).

3890402006 is a wasteful number, since it uses less digits than its factorization.

3890402006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945201005.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 3890402006 is about 62373.0871931156. The cubic root of 3890402006 is about 1572.7685886159.

Adding to 3890402006 its reverse (6002040983), we get a palindrome (9892442989).

The spelling of 3890402006 in words is "three billion, eight hundred ninety million, four hundred two thousand, six".