629240987 has 2 divisors, whose sum is σ = 629240988. Its totient is φ = 629240986.

The previous prime is 629240971. The next prime is 629241001. The reversal of 629240987 is 789042926.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629240987 - 2⁴ = 629240971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (629240957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314620493 + 314620494.

It is an arithmetic number, because the mean of its divisors is an integer number (314620494).

Almost surely, 2^629240987 is an apocalyptic number.

629240987 is a deficient number, since it is larger than the sum of its proper divisors (1).

629240987 is an equidigital number, since it uses as much as digits as its factorization.

629240987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 629240987 is about 25084.6763383545. The cubic root of 629240987 is about 856.9174784964.

The spelling of 629240987 in words is "six hundred twenty-nine million, two hundred forty thousand, nine hundred eighty-seven".