3949667669494 has 4 divisors (see below), whose sum is σ = 5924501504244. Its totient is φ = 1974833834746.

The previous prime is 3949667669461. The next prime is 3949667669527. The reversal of 3949667669494 is 4949667669493.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3949667669461) and next prime (3949667669527).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987416917372 + ... + 987416917375.

It is an arithmetic number, because the mean of its divisors is an integer number (1481125376061).

Almost surely, 2^{3949667669494} is an apocalyptic number.

3949667669494 is a deficient number, since it is larger than the sum of its proper divisors (1974833834750).

3949667669494 is a wasteful number, since it uses less digits than its factorization.

3949667669494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974833834749.

The product of its digits is 11428107264, while the sum is 82.

Subtracting 3949667669494 from its reverse (4949667669493), we obtain a palindrome (999999999999).

The spelling of 3949667669494 in words is "three trillion, nine hundred forty-nine billion, six hundred sixty-seven million, six hundred sixty-nine thousand, four hundred ninety-four".