40426634 has 4 divisors (see below), whose sum is σ = 60639954. Its totient is φ = 20213316.

The previous prime is 40426553. The next prime is 40426637. The reversal of 40426634 is 43662404.

It is a happy number.

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., 23493409 + 16933225 = 4847^2 + 4115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40426597 and 40426606.

It is not an unprimeable number, because it can be changed into a prime (40426637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106657 + ... + 10106660.

Almost surely, 2^40426634 is an apocalyptic number.

40426634 is a deficient number, since it is larger than the sum of its proper divisors (20213320).

40426634 is a wasteful number, since it uses less digits than its factorization.

40426634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20213319.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 40426634 is about 6358.1942405057. The cubic root of 40426634 is about 343.2067817334.

The spelling of 40426634 in words is "forty million, four hundred twenty-six thousand, six hundred thirty-four".