1958887 has 10 divisors (see below), whose sum is σ = 2340488. Its totient is φ = 1606044.

The previous prime is 1958867. The next prime is 1958897. The reversal of 1958887 is 7888591.

It is not a de Polignac number, because 1958887 - 2¹¹ = 1956839 is a prime.

It is a Duffinian number.

Its product of digits (161280) is a multiple of the sum of its prime divisors (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1958837) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85158 + ... + 85180.

2^1958887 is an apocalyptic number.

1958887 is a deficient number, since it is larger than the sum of its proper divisors (381601).

1958887 is an frugal number, since it uses more digits than its factorization.

1958887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 30 counting only the distinct ones).

The product of its digits is 161280, while the sum is 46.

The square root of 1958887 is about 1399.6024435532. The cubic root of 1958887 is about 125.1228019845.

The spelling of 1958887 in words is "one million, nine hundred fifty-eight thousand, eight hundred eighty-seven".