40670409 has 16 divisors (see below), whose sum is σ = 61834752. Its totient is φ = 23555328.

The previous prime is 40670381. The next prime is 40670423. The reversal of 40670409 is 90407604.

It is not a de Polignac number, because 40670409 - 2⁸ = 40670153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40670449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30009 + ... + 31334.

It is an arithmetic number, because the mean of its divisors is an integer number (3864672).

Almost surely, 2^40670409 is an apocalyptic number.

It is an amenable number.

40670409 is a deficient number, since it is larger than the sum of its proper divisors (21164343).

40670409 is a wasteful number, since it uses less digits than its factorization.

40670409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61376.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 40670409 is about 6377.3355721649. The cubic root of 40670409 is about 343.8952521575.

The spelling of 40670409 in words is "forty million, six hundred seventy thousand, four hundred nine".