40639104 has 128 divisors (see below), whose sum is σ = 130968000. Its totient is φ = 12303360.

The previous prime is 40639103. The next prime is 40639117. The reversal of 40639104 is 40193604.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40639103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37482 + ... + 38550.

Almost surely, 2^40639104 is an apocalyptic number.

40639104 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40639104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65484000).

40639104 is an abundant number, since it is smaller than the sum of its proper divisors (90328896).

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

40639104 is a wasteful number, since it uses less digits than its factorization.

40639104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40639104 is about 6374.8807047662. The cubic root of 40639104 is about 343.8069946708.

The spelling of 40639104 in words is "forty million, six hundred thirty-nine thousand, one hundred four".