40693406 has 32 divisors (see below), whose sum is σ = 67525920. Its totient is φ = 18278784.

The previous prime is 40693403. The next prime is 40693441. The reversal of 40693406 is 60439604.

40693406 = 859² + 860² + ... + 910².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40693403) 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, 235136 + ... + 235308.

It is an arithmetic number, because the mean of its divisors is an integer number (2110185).

Almost surely, 2^40693406 is an apocalyptic number.

40693406 is a deficient number, since it is larger than the sum of its proper divisors (26832514).

40693406 is a wasteful number, since it uses less digits than its factorization.

40693406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40693406 is about 6379.1383430680. The cubic root of 40693406 is about 343.9600582344.

The spelling of 40693406 in words is "forty million, six hundred ninety-three thousand, four hundred six".