40619964 has 48 divisors (see below), whose sum is σ = 118169856. Its totient is φ = 10550400.

The previous prime is 40619963. The next prime is 40619977. The reversal of 40619964 is 46991604.

It is a super-2 number, since 2×40619964² = 3299962950722592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40619963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21057 + ... + 22904.

It is an arithmetic number, because the mean of its divisors is an integer number (2461872).

Almost surely, 2^40619964 is an apocalyptic number.

40619964 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40619964 is an abundant number, since it is smaller than the sum of its proper divisors (77549892).

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

40619964 is a wasteful number, since it uses less digits than its factorization.

40619964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43986 (or 43984 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 40619964 is about 6373.3793234045. The cubic root of 40619964 is about 343.7530113676.

The spelling of 40619964 in words is "forty million, six hundred nineteen thousand, nine hundred sixty-four".