40164387 has 8 divisors (see below), whose sum is σ = 56702736. Its totient is φ = 25201152.

The previous prime is 40164349. The next prime is 40164401. The reversal of 40164387 is 78346104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40164387 - 2⁶ = 40164323 is a prime.

It is a super-2 number, since 2×40164387² = 3226355966171538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40164317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393718 + ... + 393819.

It is an arithmetic number, because the mean of its divisors is an integer number (7087842).

Almost surely, 2^40164387 is an apocalyptic number.

40164387 is a deficient number, since it is larger than the sum of its proper divisors (16538349).

40164387 is a wasteful number, since it uses less digits than its factorization.

40164387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787557.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 40164387 is about 6337.5379288806. The cubic root of 40164387 is about 342.4630453673.

The spelling of 40164387 in words is "forty million, one hundred sixty-four thousand, three hundred eighty-seven".