40387401 has 24 divisors (see below), whose sum is σ = 60677760. Its totient is φ = 25855200.

The previous prime is 40387381. The next prime is 40387411. The reversal of 40387401 is 10478304.

It is not a de Polignac number, because 40387401 - 2¹⁷ = 40256329 is a prime.

It is a super-2 number, since 2×40387401² = 3262284319069602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40387411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70446 + ... + 71016.

It is an arithmetic number, because the mean of its divisors is an integer number (2528240).

Almost surely, 2^40387401 is an apocalyptic number.

It is an amenable number.

40387401 is a deficient number, since it is larger than the sum of its proper divisors (20290359).

40387401 is a wasteful number, since it uses less digits than its factorization.

40387401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40387401 is about 6355.1082602895. The cubic root of 40387401 is about 343.0957213713.

The spelling of 40387401 in words is "forty million, three hundred eighty-seven thousand, four hundred one".