40287958 has 4 divisors (see below), whose sum is σ = 60431940. Its totient is φ = 20143978.

The previous prime is 40287889. The next prime is 40287979. The reversal of 40287958 is 85978204.

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

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, 10071988 + ... + 10071991.

It is an arithmetic number, because the mean of its divisors is an integer number (15107985).

Almost surely, 2^40287958 is an apocalyptic number.

40287958 is a deficient number, since it is larger than the sum of its proper divisors (20143982).

40287958 is a wasteful number, since it uses less digits than its factorization.

40287958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20143981.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 40287958 is about 6347.2795747470. The cubic root of 40287958 is about 342.8138966122.

The spelling of 40287958 in words is "forty million, two hundred eighty-seven thousand, nine hundred fifty-eight".