901484021 has 4 divisors (see below), whose sum is σ = 925848492. Its totient is φ = 877119552.

The previous prime is 901484009. The next prime is 901484093. The reversal of 901484021 is 120484109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120484109 = 227 ⋅530767.

It can be written as a sum of positive squares in 2 ways, for example, as 669256900 + 232227121 = 25870^2 + 15239^2 .

It is a cyclic number.

It is not a de Polignac number, because 901484021 - 2¹⁰ = 901482997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901484821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12182180 + ... + 12182253.

It is an arithmetic number, because the mean of its divisors is an integer number (231462123).

Almost surely, 2^901484021 is an apocalyptic number.

It is an amenable number.

901484021 is a deficient number, since it is larger than the sum of its proper divisors (24364471).

901484021 is a wasteful number, since it uses less digits than its factorization.

901484021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24364470.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 901484021 is about 30024.7234958126. The cubic root of 901484021 is about 966.0197622792.

The spelling of 901484021 in words is "nine hundred one million, four hundred eighty-four thousand, twenty-one".