43400901 has 4 divisors (see below), whose sum is σ = 57867872. Its totient is φ = 28933932.

The previous prime is 43400891. The next prime is 43400911. The reversal of 43400901 is 10900434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (43400891) and next prime (43400911).

It is not a de Polignac number, because 43400901 - 2¹⁰ = 43399877 is a prime.

It is a super-2 number, since 2×43400901² = 3767276415223602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43400911) 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, 7233481 + ... + 7233486.

It is an arithmetic number, because the mean of its divisors is an integer number (14466968).

Almost surely, 2^43400901 is an apocalyptic number.

It is an amenable number.

43400901 is a deficient number, since it is larger than the sum of its proper divisors (14466971).

43400901 is a wasteful number, since it uses less digits than its factorization.

43400901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14466970.

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

The square root of 43400901 is about 6587.9360197258. The cubic root of 43400901 is about 351.4252117419.

The spelling of 43400901 in words is "forty-three million, four hundred thousand, nine hundred one".