901607921 has 8 divisors (see below), whose sum is σ = 907857984. Its totient is φ = 895379760.

The previous prime is 901607891. The next prime is 901607929. The reversal of 901607921 is 129706109.

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 901607921 - 2¹⁸ = 901345777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901607929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81875 + ... + 92231.

It is an arithmetic number, because the mean of its divisors is an integer number (113482248).

Almost surely, 2^901607921 is an apocalyptic number.

It is an amenable number.

901607921 is a deficient number, since it is larger than the sum of its proper divisors (6250063).

901607921 is a wasteful number, since it uses less digits than its factorization.

901607921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10951.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 901607921 is about 30026.7867245232. The cubic root of 901607921 is about 966.0640168501.

The spelling of 901607921 in words is "nine hundred one million, six hundred seven thousand, nine hundred twenty-one".