40079551 has 4 divisors (see below), whose sum is σ = 40095000. Its totient is φ = 40064104.

The previous prime is 40079521. The next prime is 40079573. The reversal of 40079551 is 15597004.

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

It is a cyclic number.

It is not a de Polignac number, because 40079551 - 2⁵ = 40079519 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 (40079521) 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, 2776 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (10023750).

Almost surely, 2^40079551 is an apocalyptic number.

40079551 is a deficient number, since it is larger than the sum of its proper divisors (15449).

40079551 is a wasteful number, since it uses less digits than its factorization.

40079551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15448.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 40079551 is about 6330.8412553151. The cubic root of 40079551 is about 342.2217563656.

The spelling of 40079551 in words is "forty million, seventy-nine thousand, five hundred fifty-one".