40858812 has 18 divisors (see below), whose sum is σ = 103282088. Its totient is φ = 13619592.

The previous prime is 40858801. The next prime is 40858817. The reversal of 40858812 is 21885804.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1134967 = 40858812 / (4 + 0 + 8 + 5 + 8 + 8 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40858817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567448 + ... + 567519.

Almost surely, 2^40858812 is an apocalyptic number.

It is an amenable number.

40858812 is an abundant number, since it is smaller than the sum of its proper divisors (62423276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40858812 is a wasteful number, since it uses less digits than its factorization.

40858812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134977 (or 1134972 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 40858812 is about 6392.0897991189. The cubic root of 40858812 is about 344.4254583438.

The spelling of 40858812 in words is "forty million, eight hundred fifty-eight thousand, eight hundred twelve".