40380591 has 4 divisors (see below), whose sum is σ = 53840792. Its totient is φ = 26920392.

The previous prime is 40380583. The next prime is 40380601. The reversal of 40380591 is 19508304.

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

It is not a de Polignac number, because 40380591 - 2³ = 40380583 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 (40380581) 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, 6730096 + ... + 6730101.

It is an arithmetic number, because the mean of its divisors is an integer number (13460198).

Almost surely, 2^40380591 is an apocalyptic number.

40380591 is a deficient number, since it is larger than the sum of its proper divisors (13460201).

40380591 is a wasteful number, since it uses less digits than its factorization.

40380591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460200.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 40380591 is about 6354.5724482454. The cubic root of 40380591 is about 343.0764363703.

Adding to 40380591 its reverse (19508304), we get a palindrome (59888895).

The spelling of 40380591 in words is "forty million, three hundred eighty thousand, five hundred ninety-one".