3907987 has 2 divisors, whose sum is σ = 3907988. Its totient is φ = 3907986.

The previous prime is 3907979. The next prime is 3907991. The reversal of 3907987 is 7897093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3907987 - 2³ = 3907979 is a prime.

It is not a weakly prime, because it can be changed into another prime (3907927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953993 + 1953994.

It is an arithmetic number, because the mean of its divisors is an integer number (1953994).

Almost surely, 2^3907987 is an apocalyptic number.

3907987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3907987 is an equidigital number, since it uses as much as digits as its factorization.

3907987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 3907987 is about 1976.8629188692. The cubic root of 3907987 is about 157.5134715948.

The spelling of 3907987 in words is "three million, nine hundred seven thousand, nine hundred eighty-seven".