40023464 has 16 divisors (see below), whose sum is σ = 80816820. Its totient is φ = 18472320.

The previous prime is 40023463. The next prime is 40023499. The reversal of 40023464 is 46432004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38962564 + 1060900 = 6242^2 + 1030^2 .

It is not an unprimeable number, because it can be changed into a prime (40023463) 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, 192317 + ... + 192524.

Almost surely, 2^40023464 is an apocalyptic number.

It is an amenable number.

40023464 is an abundant number, since it is smaller than the sum of its proper divisors (40793356).

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

40023464 is a wasteful number, since it uses less digits than its factorization.

40023464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384860 (or 384856 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 40023464 is about 6326.4100404574. The cubic root of 40023464 is about 342.0620477234.

Adding to 40023464 its reverse (46432004), we get a palindrome (86455468).

The spelling of 40023464 in words is "forty million, twenty-three thousand, four hundred sixty-four".