901077921 has 12 divisors (see below), whose sum is σ = 1301966848. Its totient is φ = 600529464.

The previous prime is 901077893. The next prime is 901077941. The reversal of 901077921 is 129770109.

It is not a de Polignac number, because 901077921 - 2¹⁴ = 901061537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901077941) 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 11 ways as a sum of consecutive naturals, for example, 18276 + ... + 46218.

Almost surely, 2^901077921 is an apocalyptic number.

It is an amenable number.

901077921 is a deficient number, since it is larger than the sum of its proper divisors (400888927).

901077921 is a wasteful number, since it uses less digits than its factorization.

901077921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31532 (or 31529 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 901077921 is about 30017.9599739889. The cubic root of 901077921 is about 965.8746831508.

The spelling of 901077921 in words is "nine hundred one million, seventy-seven thousand, nine hundred twenty-one".