999670901 has 4 divisors (see below), whose sum is σ = 1001135232. Its totient is φ = 998206572.

The previous prime is 999670877. The next prime is 999670943. The reversal of 999670901 is 109076999.

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 999670901 - 2¹⁰ = 999669877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999670901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999670951) 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 3 ways as a sum of consecutive naturals, for example, 731141 + ... + 732506.

It is an arithmetic number, because the mean of its divisors is an integer number (250283808).

Almost surely, 2^999670901 is an apocalyptic number.

It is an amenable number.

999670901 is a deficient number, since it is larger than the sum of its proper divisors (1464331).

999670901 is a wasteful number, since it uses less digits than its factorization.

999670901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464330.

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 999670901 is about 31617.5726614173. The cubic root of 999670901 is about 999.8902882971.

The spelling of 999670901 in words is "nine hundred ninety-nine million, six hundred seventy thousand, nine hundred one".