40660407 has 16 divisors (see below), whose sum is σ = 62316000. Its totient is φ = 26171712.

The previous prime is 40660393. The next prime is 40660421. The reversal of 40660407 is 70406604.

It is an interprime number because it is at equal distance from previous prime (40660393) and next prime (40660421).

It is not a de Polignac number, because 40660407 - 2¹² = 40656311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40660427) 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, 25182 + ... + 26747.

It is an arithmetic number, because the mean of its divisors is an integer number (3894750).

Almost surely, 2^40660407 is an apocalyptic number.

40660407 is a deficient number, since it is larger than the sum of its proper divisors (21655593).

40660407 is a wasteful number, since it uses less digits than its factorization.

40660407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51967 (or 51961 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40660407 is about 6376.5513406543. The cubic root of 40660407 is about 343.8670586674.

The spelling of 40660407 in words is "forty million, six hundred sixty thousand, four hundred seven".