3990551093 has 2 divisors, whose sum is σ = 3990551094. Its totient is φ = 3990551092.

The previous prime is 3990551087. The next prime is 3990551137. The reversal of 3990551093 is 3901550993.

It is an a-pointer prime, because the next prime (3990551137) can be obtained adding 3990551093 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3831362404 + 159188689 = 61898^2 + 12617^2 .

It is a cyclic number.

It is not a de Polignac number, because 3990551093 - 2⁴ = 3990551077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3990551063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1995275546 + 1995275547.

It is an arithmetic number, because the mean of its divisors is an integer number (1995275547).

Almost surely, 2^3990551093 is an apocalyptic number.

It is an amenable number.

3990551093 is a deficient number, since it is larger than the sum of its proper divisors (1).

3990551093 is an equidigital number, since it uses as much as digits as its factorization.

3990551093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164025, while the sum is 44.

The square root of 3990551093 is about 63170.8088677041. The cubic root of 3990551093 is about 1586.1501327229.

The spelling of 3990551093 in words is "three billion, nine hundred ninety million, five hundred fifty-one thousand, ninety-three".