1990877 has 8 divisors (see below), whose sum is σ = 2395200. Its totient is φ = 1616544.

The previous prime is 1990871. The next prime is 1990883. The reversal of 1990877 is 7780991.

It is an interprime number because it is at equal distance from previous prime (1990871) and next prime (1990883).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1990877 - 2⁸ = 1990621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7352 + ... + 7617.

It is an arithmetic number, because the mean of its divisors is an integer number (299400).

2^1990877 is an apocalyptic number.

It is an amenable number.

1990877 is a deficient number, since it is larger than the sum of its proper divisors (404323).

1990877 is a wasteful number, since it uses less digits than its factorization.

1990877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14995.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 1990877 is about 1410.9844081350. The cubic root of 1990877 is about 125.8002419697.

The spelling of 1990877 in words is "one million, nine hundred ninety thousand, eight hundred seventy-seven".