953416021 has 4 divisors (see below), whose sum is σ = 953482572. Its totient is φ = 953349472.

The previous prime is 953416019. The next prime is 953416027. The reversal of 953416021 is 120614359.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 611572900 + 341843121 = 24730^2 + 18489^2 .

It is a cyclic number.

It is not a de Polignac number, because 953416021 - 2¹ = 953416019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (953416027) 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, 1966 + ... + 43711.

It is an arithmetic number, because the mean of its divisors is an integer number (238370643).

Almost surely, 2^953416021 is an apocalyptic number.

It is an amenable number.

953416021 is a deficient number, since it is larger than the sum of its proper divisors (66551).

953416021 is a wasteful number, since it uses less digits than its factorization.

953416021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66550.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 953416021 is about 30877.4354666964. The cubic root of 953416021 is about 984.2244476242.

The spelling of 953416021 in words is "nine hundred fifty-three million, four hundred sixteen thousand, twenty-one".