40147398 has 12 divisors (see below), whose sum is σ = 86986068. Its totient is φ = 13382460.

The previous prime is 40147391. The next prime is 40147403. The reversal of 40147398 is 89374104.

It is a happy number.

It is a super-2 number, since 2×40147398² = 3223627132340808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40147391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115188 + ... + 1115223.

It is an arithmetic number, because the mean of its divisors is an integer number (7248839).

Almost surely, 2^40147398 is an apocalyptic number.

40147398 is an abundant number, since it is smaller than the sum of its proper divisors (46838670).

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

40147398 is a wasteful number, since it uses less digits than its factorization.

40147398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230419 (or 2230416 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40147398 is about 6336.1974401055. The cubic root of 40147398 is about 342.4147527908.

The spelling of 40147398 in words is "forty million, one hundred forty-seven thousand, three hundred ninety-eight".