40357481 has 8 divisors (see below), whose sum is σ = 40719624. Its totient is φ = 39997440.

The previous prime is 40357477. The next prime is 40357483. The reversal of 40357481 is 18475304.

It can be written as a sum of positive squares in 4 ways, for example, as 5736025 + 34621456 = 2395^2 + 5884^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40357481 - 2² = 40357477 is a prime.

It is a super-2 number, since 2×40357481² = 3257452545330722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40357483) 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, 95651 + ... + 96071.

It is an arithmetic number, because the mean of its divisors is an integer number (5089953).

Almost surely, 2^40357481 is an apocalyptic number.

It is an amenable number.

40357481 is a deficient number, since it is larger than the sum of its proper divisors (362143).

40357481 is a wasteful number, since it uses less digits than its factorization.

40357481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40357481 is about 6352.7538123242. The cubic root of 40357481 is about 343.0109758010.

The spelling of 40357481 in words is "forty million, three hundred fifty-seven thousand, four hundred eighty-one".