40398061 has 8 divisors (see below), whose sum is σ = 44178048. Its totient is φ = 36636000.

The previous prime is 40398049. The next prime is 40398109. The reversal of 40398061 is 16089304.

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

It is a cyclic number.

It is not a de Polignac number, because 40398061 - 2⁹ = 40397549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40398041) 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, 481 + ... + 9001.

It is an arithmetic number, because the mean of its divisors is an integer number (5522256).

Almost surely, 2^40398061 is an apocalyptic number.

It is an amenable number.

40398061 is a deficient number, since it is larger than the sum of its proper divisors (3779987).

40398061 is a wasteful number, since it uses less digits than its factorization.

40398061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40398061 is about 6355.9469003446. The cubic root of 40398061 is about 343.1259047004.

It can be divided in two parts, 4039 and 8061, that added together give a square (12100 = 110²).

The spelling of 40398061 in words is "forty million, three hundred ninety-eight thousand, sixty-one".