40304398 has 4 divisors (see below), whose sum is σ = 60456600. Its totient is φ = 20152198.

The previous prime is 40304323. The next prime is 40304401. The reversal of 40304398 is 89340304.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076098 + ... + 10076101.

It is an arithmetic number, because the mean of its divisors is an integer number (15114150).

Almost surely, 2^40304398 is an apocalyptic number.

40304398 is a deficient number, since it is larger than the sum of its proper divisors (20152202).

40304398 is a wasteful number, since it uses less digits than its factorization.

40304398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20152201.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40304398 is about 6348.5744856621. The cubic root of 40304398 is about 342.8605200891.

The spelling of 40304398 in words is "forty million, three hundred four thousand, three hundred ninety-eight".