40980997 has 4 divisors (see below), whose sum is σ = 41083596. Its totient is φ = 40878400.

The previous prime is 40980949. The next prime is 40981007. The reversal of 40980997 is 79908904.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37773316 + 3207681 = 6146^2 + 1791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40980997 is a prime.

It is a super-2 number, since 2×40980997² = 3358884230228018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40980937) 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, 50698 + ... + 51499.

It is an arithmetic number, because the mean of its divisors is an integer number (10270899).

Almost surely, 2^40980997 is an apocalyptic number.

It is an amenable number.

40980997 is a deficient number, since it is larger than the sum of its proper divisors (102599).

40980997 is a wasteful number, since it uses less digits than its factorization.

40980997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102598.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 40980997 is about 6401.6401804538. The cubic root of 40980997 is about 344.7684422510.

It can be divided in two parts, 409 and 80997, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 40980997 in words is "forty million, nine hundred eighty thousand, nine hundred ninety-seven".