40149198 has 12 divisors (see below), whose sum is σ = 86989968. Its totient is φ = 13383060.

The previous prime is 40149157. The next prime is 40149199. The reversal of 40149198 is 89194104.

It is a super-2 number, since 2×40149198² = 3223916200086408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40149199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115238 + ... + 1115273.

It is an arithmetic number, because the mean of its divisors is an integer number (7249164).

Almost surely, 2^40149198 is an apocalyptic number.

40149198 is an abundant number, since it is smaller than the sum of its proper divisors (46840770).

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

40149198 is a wasteful number, since it uses less digits than its factorization.

40149198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230519 (or 2230516 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 40149198 is about 6336.3394795418. The cubic root of 40149198 is about 342.4198700784.

The spelling of 40149198 in words is "forty million, one hundred forty-nine thousand, one hundred ninety-eight".