40003400 has 24 divisors (see below), whose sum is σ = 93008370. Its totient is φ = 16001280.

The previous prime is 40003391. The next prime is 40003409. The reversal of 40003400 is 430004.

It is an interprime number because it is at equal distance from previous prime (40003391) and next prime (40003409).

It can be written as a sum of positive squares in 3 ways, for example, as 20484676 + 19518724 = 4526^2 + 4418^2 .

It is not an unprimeable number, because it can be changed into a prime (40003409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99809 + ... + 100208.

Almost surely, 2^40003400 is an apocalyptic number.

40003400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40003400 is an abundant number, since it is smaller than the sum of its proper divisors (53004970).

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

40003400 is a wasteful number, since it uses less digits than its factorization.

40003400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200033 (or 200024 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 40003400 is about 6324.8241082263. The cubic root of 40003400 is about 342.0048789245.

Adding to 40003400 its reverse (430004), we get a palindrome (40433404).

The spelling of 40003400 in words is "forty million, three thousand, four hundred".