1402649987 has 2 divisors, whose sum is σ = 1402649988. Its totient is φ = 1402649986.

The previous prime is 1402649971. The next prime is 1402650013. The reversal of 1402649987 is 7899462041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1402649987 - 2⁴ = 1402649971 is a prime.

It is a super-2 number, since 2×1402649987² = 3934853972062200338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1402649887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701324993 + 701324994.

It is an arithmetic number, because the mean of its divisors is an integer number (701324994).

Almost surely, 2^1402649987 is an apocalyptic number.

1402649987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402649987 is an equidigital number, since it uses as much as digits as its factorization.

1402649987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1402649987 is about 37451.9690670597. The cubic root of 1402649987 is about 1119.3943331914.

The spelling of 1402649987 in words is "one billion, four hundred two million, six hundred forty-nine thousand, nine hundred eighty-seven".