40097398 has 16 divisors (see below), whose sum is σ = 66447360. Its totient is φ = 17994600.

The previous prime is 40097389. The next prime is 40097411. The reversal of 40097398 is 89379004.

It is a self number, because there is not a number n which added to its sum of digits gives 40097398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9798 + ... + 13273.

It is an arithmetic number, because the mean of its divisors is an integer number (4152960).

Almost surely, 2^40097398 is an apocalyptic number.

40097398 is a deficient number, since it is larger than the sum of its proper divisors (26349962).

40097398 is a wasteful number, since it uses less digits than its factorization.

40097398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23163.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40097398 is about 6332.2506267519. The cubic root of 40097398 is about 342.2725447369.

The spelling of 40097398 in words is "forty million, ninety-seven thousand, three hundred ninety-eight".