40213899 has 24 divisors (see below), whose sum is σ = 66705600. Its totient is φ = 23088240.

The previous prime is 40213897. The next prime is 40213933. The reversal of 40213899 is 99831204.

It is not a de Polignac number, because 40213899 - 2¹ = 40213897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40213897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8809 + ... + 12570.

It is an arithmetic number, because the mean of its divisors is an integer number (2779400).

Almost surely, 2^40213899 is an apocalyptic number.

40213899 is a deficient number, since it is larger than the sum of its proper divisors (26491701).

40213899 is a wasteful number, since it uses less digits than its factorization.

40213899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21415 (or 21412 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 40213899 is about 6341.4429745918. The cubic root of 40213899 is about 342.6037095137.

The spelling of 40213899 in words is "forty million, two hundred thirteen thousand, eight hundred ninety-nine".