995443621 has 2 divisors, whose sum is σ = 995443622. Its totient is φ = 995443620.

The previous prime is 995443613. The next prime is 995443639. The reversal of 995443621 is 126344599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596043396 + 399400225 = 24414^2 + 19985^2 .

It is a cyclic number.

It is not a de Polignac number, because 995443621 - 2³ = 995443613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (995443921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497721810 + 497721811.

It is an arithmetic number, because the mean of its divisors is an integer number (497721811).

Almost surely, 2^995443621 is an apocalyptic number.

It is an amenable number.

995443621 is a deficient number, since it is larger than the sum of its proper divisors (1).

995443621 is an equidigital number, since it uses as much as digits as its factorization.

995443621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 995443621 is about 31550.6516731430. The cubic root of 995443621 is about 998.4788944109.

The spelling of 995443621 in words is "nine hundred ninety-five million, four hundred forty-three thousand, six hundred twenty-one".