40663494 has 24 divisors (see below), whose sum is σ = 91935792. Its totient is φ = 12965040.

The previous prime is 40663489. The next prime is 40663499. The reversal of 40663494 is 49436604.

It is an interprime number because it is at equal distance from previous prime (40663489) and next prime (40663499).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48697 + ... + 49524.

It is an arithmetic number, because the mean of its divisors is an integer number (3830658).

Almost surely, 2^40663494 is an apocalyptic number.

40663494 is an abundant number, since it is smaller than the sum of its proper divisors (51272298).

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

40663494 is a wasteful number, since it uses less digits than its factorization.

40663494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98252 (or 98249 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 40663494 is about 6376.7933948028. The cubic root of 40663494 is about 343.8757607507.

The spelling of 40663494 in words is "forty million, six hundred sixty-three thousand, four hundred ninety-four".