140407987 has 2 divisors, whose sum is σ = 140407988. Its totient is φ = 140407986.

The previous prime is 140407973. The next prime is 140407997. The reversal of 140407987 is 789704041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140407987 - 2¹¹ = 140405939 is a prime.

It is not a weakly prime, because it can be changed into another prime (140407907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70203993 + 70203994.

It is an arithmetic number, because the mean of its divisors is an integer number (70203994).

Almost surely, 2^140407987 is an apocalyptic number.

140407987 is a deficient number, since it is larger than the sum of its proper divisors (1).

140407987 is an equidigital number, since it uses as much as digits as its factorization.

140407987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 140407987 is about 11849.3876213077. The cubic root of 140407987 is about 519.7533186469.

The spelling of 140407987 in words is "one hundred forty million, four hundred seven thousand, nine hundred eighty-seven".