40099834 has 4 divisors (see below), whose sum is σ = 60149754. Its totient is φ = 20049916.

The previous prime is 40099831. The next prime is 40099859. The reversal of 40099834 is 43899004.

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

It can be written as a sum of positive squares in only one way, i.e., 33582025 + 6517809 = 5795^2 + 2553^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40099793 and 40099802.

It is not an unprimeable number, because it can be changed into a prime (40099831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10024957 + ... + 10024960.

Almost surely, 2^40099834 is an apocalyptic number.

40099834 is a deficient number, since it is larger than the sum of its proper divisors (20049920).

40099834 is a wasteful number, since it uses less digits than its factorization.

40099834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20049919.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40099834 is about 6332.4429725028. The cubic root of 40099834 is about 342.2794758520.

The spelling of 40099834 in words is "forty million, ninety-nine thousand, eight hundred thirty-four".