40778037 has 6 divisors (see below), whose sum is σ = 58901622. Its totient is φ = 27185352.

The previous prime is 40777993. The next prime is 40778039. The reversal of 40778037 is 73087704.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29224836 + 11553201 = 5406^2 + 3399^2 .

It is not a de Polignac number, because 40778037 - 2¹⁰ = 40777013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40777992 and 40778010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2265438 + ... + 2265455.

It is an arithmetic number, because the mean of its divisors is an integer number (9816937).

Almost surely, 2^40778037 is an apocalyptic number.

It is an amenable number.

40778037 is a deficient number, since it is larger than the sum of its proper divisors (18123585).

40778037 is a wasteful number, since it uses less digits than its factorization.

40778037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530899 (or 4530896 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 40778037 is about 6385.7683171252. The cubic root of 40778037 is about 344.1983403035.

The spelling of 40778037 in words is "forty million, seven hundred seventy-eight thousand, thirty-seven".