40398470 has 32 divisors (see below), whose sum is σ = 84476736. Its totient is φ = 13622400.

The previous prime is 40398461. The next prime is 40398473. The reversal of 40398470 is 7489304.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 40398470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40398473) 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, 461 + ... + 9000.

It is an arithmetic number, because the mean of its divisors is an integer number (2639898).

Almost surely, 2^40398470 is an apocalyptic number.

40398470 is an abundant number, since it is smaller than the sum of its proper divisors (44078266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40398470 is a wasteful number, since it uses less digits than its factorization.

40398470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40398470 is about 6355.9790748554. The cubic root of 40398470 is about 343.1270626605.

The spelling of 40398470 in words is "forty million, three hundred ninety-eight thousand, four hundred seventy".