40433745 has 32 divisors (see below), whose sum is σ = 71000064. Its totient is φ = 19486400.

The previous prime is 40433741. The next prime is 40433761. The reversal of 40433745 is 54733404.

It is not a de Polignac number, because 40433745 - 2² = 40433741 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40433741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30874 + ... + 32156.

It is an arithmetic number, because the mean of its divisors is an integer number (2218752).

Almost surely, 2^40433745 is an apocalyptic number.

It is an amenable number.

40433745 is a deficient number, since it is larger than the sum of its proper divisors (30566319).

40433745 is a wasteful number, since it uses less digits than its factorization.

40433745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 40433745 is about 6358.7534155682. The cubic root of 40433745 is about 343.2269037842.

The spelling of 40433745 in words is "forty million, four hundred thirty-three thousand, seven hundred forty-five".