1407609987 has 16 divisors (see below), whose sum is σ = 2185401600. Its totient is φ = 789171552.

The previous prime is 1407609967. The next prime is 1407609989. The reversal of 1407609987 is 7899067041.

1407609987 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1407609987 - 2⁶ = 1407609923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1407609989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631237 + ... + 633462.

It is an arithmetic number, because the mean of its divisors is an integer number (136587600).

Almost surely, 2^1407609987 is an apocalyptic number.

1407609987 is a deficient number, since it is larger than the sum of its proper divisors (777791613).

1407609987 is a wasteful number, since it uses less digits than its factorization.

1407609987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264762.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 1407609987 is about 37518.1287779655. The cubic root of 1407609987 is about 1120.7122348488.

The spelling of 1407609987 in words is "one billion, four hundred seven million, six hundred nine thousand, nine hundred eighty-seven".