40343964 has 24 divisors (see below), whose sum is σ = 95733120. Its totient is φ = 13219824.

The previous prime is 40343951. The next prime is 40343969. The reversal of 40343964 is 46934304.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27784 + ... + 29199.

It is an arithmetic number, because the mean of its divisors is an integer number (3988880).

Almost surely, 2^40343964 is an apocalyptic number.

It is an amenable number.

40343964 is an abundant number, since it is smaller than the sum of its proper divisors (55389156).

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

40343964 is a wasteful number, since it uses less digits than its factorization.

40343964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57049 (or 57047 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 40343964 is about 6351.6898538893. The cubic root of 40343964 is about 342.9726764409.

The spelling of 40343964 in words is "forty million, three hundred forty-three thousand, nine hundred sixty-four".