40851898 has 4 divisors (see below), whose sum is σ = 61277850. Its totient is φ = 20425948.

The previous prime is 40851859. The next prime is 40851931. The reversal of 40851898 is 89815804.

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., 23068809 + 17783089 = 4803^2 + 4217^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212973 + ... + 10212976.

Almost surely, 2^40851898 is an apocalyptic number.

40851898 is a deficient number, since it is larger than the sum of its proper divisors (20425952).

40851898 is a wasteful number, since it uses less digits than its factorization.

40851898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20425951.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 40851898 is about 6391.5489515453. The cubic root of 40851898 is about 344.4060297160.

The spelling of 40851898 in words is "forty million, eight hundred fifty-one thousand, eight hundred ninety-eight".