1677086989 has 4 divisors (see below), whose sum is σ = 1716089056. Its totient is φ = 1638084924.

The previous prime is 1677086963. The next prime is 1677086993. The reversal of 1677086989 is 9896807761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1677086989 - 2⁷ = 1677086861 is a prime.

It is a super-2 number, since 2×1677086989² = 5625241537346172242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1677086909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19500969 + ... + 19501054.

It is an arithmetic number, because the mean of its divisors is an integer number (429022264).

Almost surely, 2^1677086989 is an apocalyptic number.

It is an amenable number.

1677086989 is a deficient number, since it is larger than the sum of its proper divisors (39002067).

1677086989 is an equidigital number, since it uses as much as digits as its factorization.

1677086989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39002066.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 1677086989 is about 40952.2525509892. The cubic root of 1677086989 is about 1188.0969013776.

The spelling of 1677086989 in words is "one billion, six hundred seventy-seven million, eighty-six thousand, nine hundred eighty-nine".