40977969 has 4 divisors (see below), whose sum is σ = 54637296. Its totient is φ = 27318644.

The previous prime is 40977961. The next prime is 40977997. The reversal of 40977969 is 96977904.

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 a cyclic number.

It is not a de Polignac number, because 40977969 - 2³ = 40977961 is a prime.

It is a super-2 number, since 2×40977969² = 3358387886729922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40977961) 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 3 ways as a sum of consecutive naturals, for example, 6829659 + ... + 6829664.

It is an arithmetic number, because the mean of its divisors is an integer number (13659324).

Almost surely, 2^40977969 is an apocalyptic number.

It is an amenable number.

40977969 is a deficient number, since it is larger than the sum of its proper divisors (13659327).

40977969 is a wasteful number, since it uses less digits than its factorization.

40977969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659326.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 40977969 is about 6401.4036741952. The cubic root of 40977969 is about 344.7599506359.

The spelling of 40977969 in words is "forty million, nine hundred seventy-seven thousand, nine hundred sixty-nine".