40149700 has 36 divisors (see below), whose sum is σ = 87650640. Its totient is φ = 15963040.

The previous prime is 40149649. The next prime is 40149721. The reversal of 40149700 is 794104.

40149700 = T₉₉₇ + T₉₉₈ + ... + T₁₀₇₁.

It is a super-2 number, since 2×40149700² = 3223996820180000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16779 + ... + 19021.

It is an arithmetic number, because the mean of its divisors is an integer number (2434740).

Almost surely, 2^40149700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40149700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43825320).

40149700 is an abundant number, since it is smaller than the sum of its proper divisors (47500940).

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

40149700 is a wasteful number, since it uses less digits than its factorization.

40149700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40149700 is about 6336.3790921945. The cubic root of 40149700 is about 342.4212972057.

The spelling of 40149700 in words is "forty million, one hundred forty-nine thousand, seven hundred".