40419857 has 4 divisors (see below), whose sum is σ = 40445040. Its totient is φ = 40394676.

The previous prime is 40419853. The next prime is 40419913. The reversal of 40419857 is 75891404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40419857 - 2² = 40419853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40419857.

It is not an unprimeable number, because it can be changed into a prime (40419851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10007 + ... + 13452.

It is an arithmetic number, because the mean of its divisors is an integer number (10111260).

Almost surely, 2^40419857 is an apocalyptic number.

It is an amenable number.

40419857 is a deficient number, since it is larger than the sum of its proper divisors (25183).

40419857 is a wasteful number, since it uses less digits than its factorization.

40419857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25182.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 40419857 is about 6357.6612838370. The cubic root of 40419857 is about 343.1876026089.

The spelling of 40419857 in words is "forty million, four hundred nineteen thousand, eight hundred fifty-seven".