40276391 has 4 divisors (see below), whose sum is σ = 41258784. Its totient is φ = 39294000.

The previous prime is 40276351. The next prime is 40276393. The reversal of 40276391 is 19367204.

40276391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40276391 - 2²² = 36082087 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 (40276393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491135 + ... + 491216.

It is an arithmetic number, because the mean of its divisors is an integer number (10314696).

Almost surely, 2^40276391 is an apocalyptic number.

40276391 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40276391 is a deficient number, since it is larger than the sum of its proper divisors (982393).

40276391 is an equidigital number, since it uses as much as digits as its factorization.

40276391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982392.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 40276391 is about 6346.3683315736. The cubic root of 40276391 is about 342.7810852537.

The spelling of 40276391 in words is "forty million, two hundred seventy-six thousand, three hundred ninety-one".