43490100 has 36 divisors (see below), whose sum is σ = 125832224. Its totient is φ = 11597280.

The previous prime is 43490093. The next prime is 43490123. The reversal of 43490100 is 109434.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72184 + ... + 72783.

Almost surely, 2^43490100 is an apocalyptic number.

It is an amenable number.

43490100 is an abundant number, since it is smaller than the sum of its proper divisors (82342124).

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

43490100 is a wasteful number, since it uses less digits than its factorization.

43490100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144984 (or 144977 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 43490100 is about 6594.7024193666. The cubic root of 43490100 is about 351.6658006562.

Adding to 43490100 its reverse (109434), we get a palindrome (43599534).

The spelling of 43490100 in words is "forty-three million, four hundred ninety thousand, one hundred".