40663450 has 12 divisors (see below), whose sum is σ = 75634110. Its totient is φ = 16265360.

The previous prime is 40663411. The next prime is 40663453. The reversal of 40663450 is 5436604.

It can be written as a sum of positive squares in 3 ways, for example, as 33281361 + 7382089 = 5769^2 + 2717^2 .

It is not an unprimeable number, because it can be changed into a prime (40663453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406585 + ... + 406684.

Almost surely, 2^40663450 is an apocalyptic number.

40663450 is a deficient number, since it is larger than the sum of its proper divisors (34970660).

40663450 is a wasteful number, since it uses less digits than its factorization.

40663450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813281 (or 813276 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 40663450 is about 6376.7899447920. The cubic root of 40663450 is about 343.8756367202.

The spelling of 40663450 in words is "forty million, six hundred sixty-three thousand, four hundred fifty".