40464219 has 4 divisors (see below), whose sum is σ = 53952296. Its totient is φ = 26976144.

The previous prime is 40464217. The next prime is 40464223. The reversal of 40464219 is 91246404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40464219 - 2¹ = 40464217 is a prime.

It is a super-2 number, since 2×40464219² = 3274706038559922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40464217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6744034 + ... + 6744039.

It is an arithmetic number, because the mean of its divisors is an integer number (13488074).

Almost surely, 2^40464219 is an apocalyptic number.

40464219 is a deficient number, since it is larger than the sum of its proper divisors (13488077).

40464219 is a wasteful number, since it uses less digits than its factorization.

40464219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13488076.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 40464219 is about 6361.1491886294. The cubic root of 40464219 is about 343.3131095847.

The spelling of 40464219 in words is "forty million, four hundred sixty-four thousand, two hundred nineteen".