40005213 has 8 divisors (see below), whose sum is σ = 53377728. Its totient is φ = 26651424.

The previous prime is 40005197. The next prime is 40005227. The reversal of 40005213 is 31250004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40005213 - 2⁴ = 40005197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40005192 and 40005201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40005113) 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, 1456 + ... + 9062.

It is an arithmetic number, because the mean of its divisors is an integer number (6672216).

Almost surely, 2^40005213 is an apocalyptic number.

It is an amenable number.

40005213 is a deficient number, since it is larger than the sum of its proper divisors (13372515).

40005213 is a wasteful number, since it uses less digits than its factorization.

40005213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9363.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40005213 is about 6324.9674307462. The cubic root of 40005213 is about 342.0100455310.

Adding to 40005213 its reverse (31250004), we get a palindrome (71255217).

It can be divided in two parts, 400052 and 13, that added together give a triangular number (400065 = T₈₉₄).

The spelling of 40005213 in words is "forty million, five thousand, two hundred thirteen".