894937621 has 4 divisors (see below), whose sum is σ = 903301632. Its totient is φ = 886573612.

The previous prime is 894937619. The next prime is 894937661. The reversal of 894937621 is 126739498.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126739498 = 2 ⋅63369749.

It is a cyclic number.

It is not a de Polignac number, because 894937621 - 2¹ = 894937619 is a prime.

It is a super-2 number, since 2×894937621² = 1601826690962279282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894937661) 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, 4181845 + ... + 4182058.

It is an arithmetic number, because the mean of its divisors is an integer number (225825408).

Almost surely, 2^894937621 is an apocalyptic number.

It is an amenable number.

894937621 is a deficient number, since it is larger than the sum of its proper divisors (8364011).

894937621 is a wasteful number, since it uses less digits than its factorization.

894937621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364010.

The product of its digits is 653184, while the sum is 49.

The square root of 894937621 is about 29915.5080351312. The cubic root of 894937621 is about 963.6757304950.

The spelling of 894937621 in words is "eight hundred ninety-four million, nine hundred thirty-seven thousand, six hundred twenty-one".