1407988 has 12 divisors (see below), whose sum is σ = 2483712. Its totient is φ = 698360.

The previous prime is 1407971. The next prime is 1407997. The reversal of 1407988 is 8897041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (206976).

2^1407988 is an apocalyptic number.

It is an amenable number.

1407988 is a deficient number, since it is larger than the sum of its proper divisors (1075724).

1407988 is a wasteful number, since it uses less digits than its factorization.

1407988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 2820 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1407988 is about 1186.5867014256. The cubic root of 1407988 is about 112.0812548118.

It can be divided in two parts, 140 and 7988, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 1407988 in words is "one million, four hundred seven thousand, nine hundred eighty-eight".