1001009977 has 8 divisors (see below), whose sum is σ = 1092262752. Its totient is φ = 909799200.

The previous prime is 1001009941. The next prime is 1001009983. The reversal of 1001009977 is 7799001001.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001009977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001009987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59898 + ... + 74764.

It is an arithmetic number, because the mean of its divisors is an integer number (136532844).

Almost surely, 2^1001009977 is an apocalyptic number.

It is an amenable number.

1001009977 is a deficient number, since it is larger than the sum of its proper divisors (91252775).

1001009977 is a wasteful number, since it uses less digits than its factorization.

1001009977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20999.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 1001009977 is about 31638.7417101249. The cubic root of 1001009977 is about 1000.3365457243.

The spelling of 1001009977 in words is "one billion, one million, nine thousand, nine hundred seventy-seven".