40436698 has 4 divisors (see below), whose sum is σ = 60655050. Its totient is φ = 20218348.

The previous prime is 40436689. The next prime is 40436699. The reversal of 40436698 is 89663404.

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., 40030929 + 405769 = 6327^2 + 637^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40436698.

It is not an unprimeable number, because it can be changed into a prime (40436699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10109173 + ... + 10109176.

Almost surely, 2^40436698 is an apocalyptic number.

40436698 is a deficient number, since it is larger than the sum of its proper divisors (20218352).

40436698 is a wasteful number, since it uses less digits than its factorization.

40436698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20218351.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 40436698 is about 6358.9856109288. The cubic root of 40436698 is about 343.2352592174.

The spelling of 40436698 in words is "forty million, four hundred thirty-six thousand, six hundred ninety-eight".