40051406 has 4 divisors (see below), whose sum is σ = 60077112. Its totient is φ = 20025702.

The previous prime is 40051393. The next prime is 40051409. The reversal of 40051406 is 60415004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40051409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10012850 + ... + 10012853.

It is an arithmetic number, because the mean of its divisors is an integer number (15019278).

Almost surely, 2^40051406 is an apocalyptic number.

40051406 is a deficient number, since it is larger than the sum of its proper divisors (20025706).

40051406 is a wasteful number, since it uses less digits than its factorization.

40051406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20025705.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40051406 is about 6328.6180165973. The cubic root of 40051406 is about 342.1416316590.

The spelling of 40051406 in words is "forty million, fifty-one thousand, four hundred six".