40338351 has 16 divisors (see below), whose sum is σ = 60077920. Its totient is φ = 26749440.

The previous prime is 40338341. The next prime is 40338377. The reversal of 40338351 is 15383304.

It is a happy number.

It is not a de Polignac number, because 40338351 - 2¹³ = 40330159 is a prime.

It is a super-2 number, since 2×40338351² = 3254365122798402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40338341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341 + ... + 9081.

It is an arithmetic number, because the mean of its divisors is an integer number (3754870).

Almost surely, 2^40338351 is an apocalyptic number.

40338351 is a deficient number, since it is larger than the sum of its proper divisors (19739569).

40338351 is a wasteful number, since it uses less digits than its factorization.

40338351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7943 (or 7937 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40338351 is about 6351.2479876005. The cubic root of 40338351 is about 342.9567699316.

The spelling of 40338351 in words is "forty million, three hundred thirty-eight thousand, three hundred fifty-one".