40473737 has 4 divisors (see below), whose sum is σ = 40502340. Its totient is φ = 40445136.

The previous prime is 40473709. The next prime is 40473739. The reversal of 40473737 is 73737404.

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 24641296 + 15832441 = 4964^2 + 3979^2 .

It is a cyclic number.

It is not a de Polignac number, because 40473737 - 2¹⁰ = 40472713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40473697 and 40473706.

It is not an unprimeable number, because it can be changed into a prime (40473739) 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, 12062 + ... + 15047.

It is an arithmetic number, because the mean of its divisors is an integer number (10125585).

Almost surely, 2^40473737 is an apocalyptic number.

It is an amenable number.

40473737 is a deficient number, since it is larger than the sum of its proper divisors (28603).

40473737 is a wasteful number, since it uses less digits than its factorization.

40473737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28602.

The product of its (nonzero) digits is 49392, while the sum is 35.

The square root of 40473737 is about 6361.8972799001. The cubic root of 40473737 is about 343.3400255291.

The spelling of 40473737 in words is "forty million, four hundred seventy-three thousand, seven hundred thirty-seven".