40628439 has 8 divisors (see below), whose sum is σ = 60190320. Its totient is φ = 27085608.

The previous prime is 40628429. The next prime is 40628447. The reversal of 40628439 is 93482604.

It is a happy number.

It is not a de Polignac number, because 40628439 - 2⁵ = 40628407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40628429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752352 + ... + 752405.

It is an arithmetic number, because the mean of its divisors is an integer number (7523790).

Almost surely, 2^40628439 is an apocalyptic number.

40628439 is a deficient number, since it is larger than the sum of its proper divisors (19561881).

40628439 is a wasteful number, since it uses less digits than its factorization.

40628439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504766 (or 1504760 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 40628439 is about 6374.0441636374. The cubic root of 40628439 is about 343.7769167242.

The spelling of 40628439 in words is "forty million, six hundred twenty-eight thousand, four hundred thirty-nine".