40888397398 has 4 divisors (see below), whose sum is σ = 61332596100. Its totient is φ = 20444198698.

The previous prime is 40888397393. The next prime is 40888397419. The reversal of 40888397398 is 89379388804.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40888397398² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40888397393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222099348 + ... + 10222099351.

It is an arithmetic number, because the mean of its divisors is an integer number (15333149025).

Almost surely, 2^40888397398 is an apocalyptic number.

40888397398 is a deficient number, since it is larger than the sum of its proper divisors (20444198702).

40888397398 is a wasteful number, since it uses less digits than its factorization.

40888397398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20444198701.

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 40888397398 in words is "forty billion, eight hundred eighty-eight million, three hundred ninety-seven thousand, three hundred ninety-eight".