40620413 has 4 divisors (see below), whose sum is σ = 41718300. Its totient is φ = 39522528.

The previous prime is 40620409. The next prime is 40620421. The reversal of 40620413 is 31402604.

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 2 ways, for example, as 37920964 + 2699449 = 6158^2 + 1643^2 .

It is a cyclic number.

It is not a de Polignac number, because 40620413 - 2² = 40620409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40610413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548888 + ... + 548961.

It is an arithmetic number, because the mean of its divisors is an integer number (10429575).

Almost surely, 2^40620413 is an apocalyptic number.

It is an amenable number.

40620413 is a deficient number, since it is larger than the sum of its proper divisors (1097887).

40620413 is a wasteful number, since it uses less digits than its factorization.

40620413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097886.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40620413 is about 6373.4145479484. The cubic root of 40620413 is about 343.7542779413.

The spelling of 40620413 in words is "forty million, six hundred twenty thousand, four hundred thirteen".