8401947 has 8 divisors (see below), whose sum is σ = 11288640. Its totient is φ = 5558280.

The previous prime is 8401919. The next prime is 8401949. The reversal of 8401947 is 7491048.

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

It is not a de Polignac number, because 8401947 - 2¹⁴ = 8385563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8401949) 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, 10297 + ... + 11082.

It is an arithmetic number, because the mean of its divisors is an integer number (1411080).

Almost surely, 2^8401947 is an apocalyptic number.

8401947 is a deficient number, since it is larger than the sum of its proper divisors (2886693).

8401947 is a wasteful number, since it uses less digits than its factorization.

8401947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21513.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 8401947 is about 2898.6112191876. The cubic root of 8401947 is about 203.2949758934.

The spelling of 8401947 in words is "eight million, four hundred one thousand, nine hundred forty-seven".