40857951 has 8 divisors (see below), whose sum is σ = 54716080. Its totient is φ = 27119232.

The previous prime is 40857911. The next prime is 40857967. The reversal of 40857951 is 15975804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40857951 - 2¹⁷ = 40726879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40857911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29050 + ... + 30423.

It is an arithmetic number, because the mean of its divisors is an integer number (6839510).

Almost surely, 2^40857951 is an apocalyptic number.

40857951 is a deficient number, since it is larger than the sum of its proper divisors (13858129).

40857951 is a wasteful number, since it uses less digits than its factorization.

40857951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59705.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 40857951 is about 6392.0224498980. The cubic root of 40857951 is about 344.4230390174.

The spelling of 40857951 in words is "forty million, eight hundred fifty-seven thousand, nine hundred fifty-one".