8149621 has 8 divisors (see below), whose sum is σ = 8473088. Its totient is φ = 7830000.

The previous prime is 8149619. The next prime is 8149627. The reversal of 8149621 is 1269418.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8149621 - 2¹ = 8149619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8149627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3811 + ... + 5551.

It is an arithmetic number, because the mean of its divisors is an integer number (1059136).

Almost surely, 2^8149621 is an apocalyptic number.

It is an amenable number.

8149621 is a deficient number, since it is larger than the sum of its proper divisors (323467).

8149621 is a wasteful number, since it uses less digits than its factorization.

8149621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923.

The product of its digits is 3456, while the sum is 31.

The square root of 8149621 is about 2854.7541049975. The cubic root of 8149621 is about 201.2391483675.

The spelling of 8149621 in words is "eight million, one hundred forty-nine thousand, six hundred twenty-one".