3987702493 has 2 divisors, whose sum is σ = 3987702494. Its totient is φ = 3987702492.

The previous prime is 3987702437. The next prime is 3987702527. The reversal of 3987702493 is 3942077893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2359822084 + 1627880409 = 48578^2 + 40347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3987702493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3987702493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3987702193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993851246 + 1993851247.

It is an arithmetic number, because the mean of its divisors is an integer number (1993851247).

Almost surely, 2^3987702493 is an apocalyptic number.

It is an amenable number.

3987702493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3987702493 is an equidigital number, since it uses as much as digits as its factorization.

3987702493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 3987702493 is about 63148.2580361486. The cubic root of 3987702493 is about 1585.7726257320.

The spelling of 3987702493 in words is "three billion, nine hundred eighty-seven million, seven hundred two thousand, four hundred ninety-three".