40420577 has 16 divisors (see below), whose sum is σ = 44634240. Its totient is φ = 36433152.

The previous prime is 40420573. The next prime is 40420643. The reversal of 40420577 is 77502404.

It is a cyclic number.

It is not a de Polignac number, because 40420577 - 2² = 40420573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40420573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80108 + ... + 80610.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^40420577 is an apocalyptic number.

It is an amenable number.

40420577 is a deficient number, since it is larger than the sum of its proper divisors (4213663).

40420577 is a wasteful number, since it uses less digits than its factorization.

40420577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 40420577 is about 6357.7179081806. The cubic root of 40420577 is about 343.1896403335.

The spelling of 40420577 in words is "forty million, four hundred twenty thousand, five hundred seventy-seven".