1089777 has 8 divisors (see below), whose sum is σ = 1564864. Its totient is φ = 670608.

The previous prime is 1089757. The next prime is 1089793. The reversal of 1089777 is 7779801.

It is a happy number.

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

It is not a de Polignac number, because 1089777 - 2⁶ = 1089713 is a prime.

It is a super-2 number, since 2×1089777² = 2375227819458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 27943 = 1089777 / (1 + 0 + 8 + 9 + 7 + 7 + 7).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089757) 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, 13933 + ... + 14010.

It is an arithmetic number, because the mean of its divisors is an integer number (195608).

2^1089777 is an apocalyptic number.

It is an amenable number.

1089777 is a deficient number, since it is larger than the sum of its proper divisors (475087).

1089777 is a wasteful number, since it uses less digits than its factorization.

1089777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27959.

The product of its (nonzero) digits is 24696, while the sum is 39.

The square root of 1089777 is about 1043.9238477973. The cubic root of 1089777 is about 102.9072278675.

The spelling of 1089777 in words is "one million, eighty-nine thousand, seven hundred seventy-seven".