3890920293 has 30 divisors (see below), whose sum is σ = 6293882034. Its totient is φ = 2394404064.

The previous prime is 3890920289. The next prime is 3890920303. The reversal of 3890920293 is 3920290983.

It can be written as a sum of positive squares in 3 ways, for example, as 49028004 + 3841892289 = 7002^2 + 61983^2 .

It is not a de Polignac number, because 3890920293 - 2² = 3890920289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3890920223) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 128430 + ... + 155807.

Almost surely, 2^3890920293 is an apocalyptic number.

It is an amenable number.

3890920293 is a deficient number, since it is larger than the sum of its proper divisors (2402961741).

3890920293 is a wasteful number, since it uses less digits than its factorization.

3890920293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284275 (or 284253 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 3890920293 is about 62377.2417873699. The cubic root of 3890920293 is about 1572.8384279552.

The spelling of 3890920293 in words is "three billion, eight hundred ninety million, nine hundred twenty thousand, two hundred ninety-three".