40757999 has 4 divisors (see below), whose sum is σ = 40774920. Its totient is φ = 40741080.

The previous prime is 40757989. The next prime is 40758031. The reversal of 40757999 is 99975704.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40757999 is a prime.

It is a super-3 number, since 3×40757999³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40757929) 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, 4097 + ... + 9914.

It is an arithmetic number, because the mean of its divisors is an integer number (10193730).

Almost surely, 2^40757999 is an apocalyptic number.

40757999 is a deficient number, since it is larger than the sum of its proper divisors (16921).

40757999 is a wasteful number, since it uses less digits than its factorization.

40757999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 40757999 is about 6384.1991666927. The cubic root of 40757999 is about 344.1419522993.

The spelling of 40757999 in words is "forty million, seven hundred fifty-seven thousand, nine hundred ninety-nine".