40900778 has 4 divisors (see below), whose sum is σ = 61351170. Its totient is φ = 20450388.

The previous prime is 40900771. The next prime is 40900781. The reversal of 40900778 is 87700904.

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

It can be written as a sum of positive squares in only one way, i.e., 35485849 + 5414929 = 5957^2 + 2327^2 .

It is not an unprimeable number, because it can be changed into a prime (40900771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10225193 + ... + 10225196.

Almost surely, 2^40900778 is an apocalyptic number.

40900778 is a deficient number, since it is larger than the sum of its proper divisors (20450392).

40900778 is a wasteful number, since it uses less digits than its factorization.

40900778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20450391.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 40900778 is about 6395.3716076550. The cubic root of 40900778 is about 344.5433375501.

The spelling of 40900778 in words is "forty million, nine hundred thousand, seven hundred seventy-eight".