40437798 has 16 divisors (see below), whose sum is σ = 85633200. Its totient is φ = 12686336.

The previous prime is 40437797. The next prime is 40437799. The reversal of 40437798 is 89773404.

It is an interprime number because it is at equal distance from previous prime (40437797) and next prime (40437799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40437797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198123 + ... + 198326.

It is an arithmetic number, because the mean of its divisors is an integer number (5352075).

Almost surely, 2^40437798 is an apocalyptic number.

40437798 is an abundant number, since it is smaller than the sum of its proper divisors (45195402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40437798 is a wasteful number, since it uses less digits than its factorization.

40437798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396471.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 40437798 is about 6359.0721021231. The cubic root of 40437798 is about 343.2383715336.

The spelling of 40437798 in words is "forty million, four hundred thirty-seven thousand, seven hundred ninety-eight".