40377481 has 2 divisors, whose sum is σ = 40377482. Its totient is φ = 40377480.

The previous prime is 40377439. The next prime is 40377517. The reversal of 40377481 is 18477304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34047225 + 6330256 = 5835^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 40377481 - 2⁷ = 40377353 is a prime.

It is a super-2 number, since 2×40377481² = 3260681943810722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40377401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20188740 + 20188741.

It is an arithmetic number, because the mean of its divisors is an integer number (20188741).

Almost surely, 2^40377481 is an apocalyptic number.

It is an amenable number.

40377481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40377481 is an equidigital number, since it uses as much as digits as its factorization.

40377481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 40377481 is about 6354.3277378492. The cubic root of 40377481 is about 343.0676285489.

The spelling of 40377481 in words is "forty million, three hundred seventy-seven thousand, four hundred eighty-one".