41220399 has 32 divisors (see below), whose sum is σ = 61890048. Its totient is φ = 24192000.

The previous prime is 41220391. The next prime is 41220401. The reversal of 41220399 is 99302214.

It is not a de Polignac number, because 41220399 - 2³ = 41220391 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41220391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170919 + ... + 171159.

It is an arithmetic number, because the mean of its divisors is an integer number (1934064).

Almost surely, 2^41220399 is an apocalyptic number.

41220399 is a deficient number, since it is larger than the sum of its proper divisors (20669649).

41220399 is a wasteful number, since it uses less digits than its factorization.

41220399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 41220399 is about 6420.3114410440. The cubic root of 41220399 is about 345.4384930613.

The spelling of 41220399 in words is "forty-one million, two hundred twenty thousand, three hundred ninety-nine".