40988390 has 8 divisors (see below), whose sum is σ = 73779120. Its totient is φ = 16395352.

The previous prime is 40988357. The next prime is 40988393. The reversal of 40988390 is 9388904.

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

It is a super-2 number, since 2×40988390² = 3360096229584200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40988393) 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, 2049410 + ... + 2049429.

It is an arithmetic number, because the mean of its divisors is an integer number (9222390).

Almost surely, 2^40988390 is an apocalyptic number.

40988390 is a deficient number, since it is larger than the sum of its proper divisors (32790730).

40988390 is a wasteful number, since it uses less digits than its factorization.

40988390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4098846.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 40988390 is about 6402.2175845562. The cubic root of 40988390 is about 344.7891731590.

The spelling of 40988390 in words is "forty million, nine hundred eighty-eight thousand, three hundred ninety".