40778353 has 16 divisors (see below), whose sum is σ = 51563520. Its totient is φ = 31323600.

The previous prime is 40778347. The next prime is 40778363. The reversal of 40778353 is 35387704.

It is not a de Polignac number, because 40778353 - 2¹³ = 40770161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40778363) 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, 1738 + ... + 9196.

It is an arithmetic number, because the mean of its divisors is an integer number (3222720).

Almost surely, 2^40778353 is an apocalyptic number.

It is an amenable number.

40778353 is a deficient number, since it is larger than the sum of its proper divisors (10785167).

40778353 is a wasteful number, since it uses less digits than its factorization.

40778353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 40778353 is about 6385.7930595972. The cubic root of 40778353 is about 344.1992293965.

The spelling of 40778353 in words is "forty million, seven hundred seventy-eight thousand, three hundred fifty-three".