40378951 has 16 divisors (see below), whose sum is σ = 43092000. Its totient is φ = 37784448.

The previous prime is 40378939. The next prime is 40378967. The reversal of 40378951 is 15987304.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40378951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40378951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40378931) 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, 115525 + ... + 115873.

It is an arithmetic number, because the mean of its divisors is an integer number (2693250).

Almost surely, 2^40378951 is an apocalyptic number.

40378951 is a deficient number, since it is larger than the sum of its proper divisors (2713049).

40378951 is a wasteful number, since it uses less digits than its factorization.

40378951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 40378951 is about 6354.4434059955. The cubic root of 40378951 is about 343.0717917877.

The spelling of 40378951 in words is "forty million, three hundred seventy-eight thousand, nine hundred fifty-one".