40821099 has 16 divisors (see below), whose sum is σ = 59761920. Its totient is φ = 24579360.

The previous prime is 40821091. The next prime is 40821107. The reversal of 40821099 is 99012804.

It is an interprime number because it is at equal distance from previous prime (40821091) and next prime (40821107).

It is not a de Polignac number, because 40821099 - 2³ = 40821091 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (40821091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242 + ... + 9120.

It is an arithmetic number, because the mean of its divisors is an integer number (3735120).

Almost surely, 2^40821099 is an apocalyptic number.

40821099 is a deficient number, since it is larger than the sum of its proper divisors (18940821).

40821099 is a wasteful number, since it uses less digits than its factorization.

40821099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 40821099 is about 6389.1391438910. The cubic root of 40821099 is about 344.3194566015.

The spelling of 40821099 in words is "forty million, eight hundred twenty-one thousand, ninety-nine".