1147977 has 12 divisors (see below), whose sum is σ = 1668420. Its totient is φ = 760608.

The previous prime is 1147969. The next prime is 1147981. The reversal of 1147977 is 7797411.

It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 553536 = 771^2 + 744^2 .

It is not a de Polignac number, because 1147977 - 2³ = 1147969 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1147987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1783 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (139035).

2^1147977 is an apocalyptic number.

It is an amenable number.

1147977 is a deficient number, since it is larger than the sum of its proper divisors (520443).

1147977 is a wasteful number, since it uses less digits than its factorization.

1147977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 789 counting only the distinct ones).

The product of its digits is 12348, while the sum is 36.

The square root of 1147977 is about 1071.4368856820. The cubic root of 1147977 is about 104.7074851724.

The spelling of 1147977 in words is "one million, one hundred forty-seven thousand, nine hundred seventy-seven".