40667279 has 4 divisors (see below), whose sum is σ = 40767120. Its totient is φ = 40567440.

The previous prime is 40667269. The next prime is 40667299. The reversal of 40667279 is 97276604.

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 40667279 - 2⁸ = 40667023 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 (40667219) 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, 49307 + ... + 50124.

It is an arithmetic number, because the mean of its divisors is an integer number (10191780).

Almost surely, 2^40667279 is an apocalyptic number.

40667279 is a deficient number, since it is larger than the sum of its proper divisors (99841).

40667279 is an equidigital number, since it uses as much as digits as its factorization.

40667279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99840.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 40667279 is about 6377.0901671530. The cubic root of 40667279 is about 343.8864298566.

The spelling of 40667279 in words is "forty million, six hundred sixty-seven thousand, two hundred seventy-nine".