40651406 has 8 divisors (see below), whose sum is σ = 61186104. Its totient is φ = 20256040.

The previous prime is 40651361. The next prime is 40651409. The reversal of 40651406 is 60415604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40651409) 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, 34100 + ... + 35271.

It is an arithmetic number, because the mean of its divisors is an integer number (7648263).

Almost surely, 2^40651406 is an apocalyptic number.

40651406 is a deficient number, since it is larger than the sum of its proper divisors (20534698).

40651406 is a wasteful number, since it uses less digits than its factorization.

40651406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69666.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40651406 is about 6375.8455125575. The cubic root of 40651406 is about 343.8416828285.

The spelling of 40651406 in words is "forty million, six hundred fifty-one thousand, four hundred six".