3890902040949 has 24 divisors (see below), whose sum is σ = 6583492880928. Its totient is φ = 2021247812640.

The previous prime is 3890902040947. The next prime is 3890902040959. The reversal of 3890902040949 is 9490402090983.

It is not a de Polignac number, because 3890902040949 - 2¹ = 3890902040947 is a prime.

It is a super-2 number, since 2×3890902040949² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890902040947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1203122082 + ... + 1203125315.

It is an arithmetic number, because the mean of its divisors is an integer number (274312203372).

Almost surely, 2^{3890902040949} is an apocalyptic number.

It is an amenable number.

3890902040949 is a deficient number, since it is larger than the sum of its proper divisors (2692590839979).

3890902040949 is a wasteful number, since it uses less digits than its factorization.

3890902040949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406247425 (or 2406247418 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 3890902040949 in words is "three trillion, eight hundred ninety billion, nine hundred two million, forty thousand, nine hundred forty-nine".