40213355 has 32 divisors (see below), whose sum is σ = 61329408. Its totient is φ = 24624000.

The previous prime is 40213351. The next prime is 40213357. The reversal of 40213355 is 55331204.

It is not a de Polignac number, because 40213355 - 2² = 40213351 is a prime.

It is a super-2 number, since 2×40213355² = 3234227840712050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40213355.

It is not an unprimeable number, because it can be changed into a prime (40213351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12680 + ... + 15530.

It is an arithmetic number, because the mean of its divisors is an integer number (1916544).

Almost surely, 2^40213355 is an apocalyptic number.

40213355 is a deficient number, since it is larger than the sum of its proper divisors (21116053).

40213355 is a wasteful number, since it uses less digits than its factorization.

40213355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 40213355 is about 6341.4000820008. The cubic root of 40213355 is about 342.6021646311.

Adding to 40213355 its reverse (55331204), we get a palindrome (95544559).

The spelling of 40213355 in words is "forty million, two hundred thirteen thousand, three hundred fifty-five".