40387954 has 16 divisors (see below), whose sum is σ = 66935808. Its totient is φ = 18179392.

The previous prime is 40387927. The next prime is 40387957. The reversal of 40387954 is 45978304.

It is a super-2 number, since 2×40387954² = 3262373656612232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40387957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25042 + ... + 26605.

It is an arithmetic number, because the mean of its divisors is an integer number (4183488).

Almost surely, 2^40387954 is an apocalyptic number.

40387954 is a deficient number, since it is larger than the sum of its proper divisors (26547854).

40387954 is a wasteful number, since it uses less digits than its factorization.

40387954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51689.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 40387954 is about 6355.1517684474. The cubic root of 40387954 is about 343.0972872975.

The spelling of 40387954 in words is "forty million, three hundred eighty-seven thousand, nine hundred fifty-four".