40789634 has 4 divisors (see below), whose sum is σ = 61184454. Its totient is φ = 20394816.

The previous prime is 40789597. The next prime is 40789643. The reversal of 40789634 is 43698704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40360609 + 429025 = 6353^2 + 655^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40789591 and 40789600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10197407 + ... + 10197410.

Almost surely, 2^40789634 is an apocalyptic number.

40789634 is a deficient number, since it is larger than the sum of its proper divisors (20394820).

40789634 is a wasteful number, since it uses less digits than its factorization.

40789634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20394819.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 40789634 is about 6386.6762873971. The cubic root of 40789634 is about 344.2309664434.

The spelling of 40789634 in words is "forty million, seven hundred eighty-nine thousand, six hundred thirty-four".