40477971 has 8 divisors (see below), whose sum is σ = 55711744. Its totient is φ = 26114760.

The previous prime is 40477967. The next prime is 40477973. The reversal of 40477971 is 17977404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40477971 - 2² = 40477967 is a prime.

It is a super-2 number, since 2×40477971² = 3276932272553682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40477973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217531 + ... + 217716.

It is an arithmetic number, because the mean of its divisors is an integer number (6963968).

Almost surely, 2^40477971 is an apocalyptic number.

40477971 is a deficient number, since it is larger than the sum of its proper divisors (15233773).

40477971 is a wasteful number, since it uses less digits than its factorization.

40477971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435281.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 40477971 is about 6362.2300335653. The cubic root of 40477971 is about 343.3519974982.

The spelling of 40477971 in words is "forty million, four hundred seventy-seven thousand, nine hundred seventy-one".