949721 has 4 divisors (see below), whose sum is σ = 982500. Its totient is φ = 916944.

The previous prime is 949699. The next prime is 949733. The reversal of 949721 is 127949.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 127949 = 23 ⋅5563.

It can be written as a sum of positive squares in 2 ways, for example, as 366025 + 583696 = 605^2 + 764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949721 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 949721.

It is not an unprimeable number, because it can be changed into a prime (949771) 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, 16346 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (245625).

2⁹⁴⁹⁷²¹ is an apocalyptic number.

It is an amenable number.

949721 is a deficient number, since it is larger than the sum of its proper divisors (32779).

949721 is a wasteful number, since it uses less digits than its factorization.

949721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32778.

The product of its digits is 4536, while the sum is 32.

The square root of 949721 is about 974.5362999909. The cubic root of 949721 is about 98.2951327886.

The spelling of 949721 in words is "nine hundred forty-nine thousand, seven hundred twenty-one".