40406737 has 4 divisors (see below), whose sum is σ = 46179136. Its totient is φ = 34634340.

The previous prime is 40406687. The next prime is 40406747. The reversal of 40406737 is 73760404.

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 40406737 - 2¹⁹ = 39882449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40406699 and 40406708.

It is not an unprimeable number, because it can be changed into a prime (40406747) 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, 2886189 + ... + 2886202.

It is an arithmetic number, because the mean of its divisors is an integer number (11544784).

Almost surely, 2^40406737 is an apocalyptic number.

It is an amenable number.

40406737 is a deficient number, since it is larger than the sum of its proper divisors (5772399).

40406737 is an equidigital number, since it uses as much as digits as its factorization.

40406737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772398.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 40406737 is about 6356.6293741259. The cubic root of 40406737 is about 343.1504665002.

The spelling of 40406737 in words is "forty million, four hundred six thousand, seven hundred thirty-seven".