40408077 has 4 divisors (see below), whose sum is σ = 53877440. Its totient is φ = 26938716.

The previous prime is 40408073. The next prime is 40408087. The reversal of 40408077 is 77080404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40408077 - 2² = 40408073 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 (40408073) 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, 6734677 + ... + 6734682.

It is an arithmetic number, because the mean of its divisors is an integer number (13469360).

Almost surely, 2^40408077 is an apocalyptic number.

It is an amenable number.

40408077 is a deficient number, since it is larger than the sum of its proper divisors (13469363).

40408077 is a wasteful number, since it uses less digits than its factorization.

40408077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13469362.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 40408077 is about 6356.7347750240. The cubic root of 40408077 is about 343.1542597336.

The spelling of 40408077 in words is "forty million, four hundred eight thousand, seventy-seven".