40619440 has 20 divisors (see below), whose sum is σ = 94440384. Its totient is φ = 16247744.

The previous prime is 40619419. The next prime is 40619461. The reversal of 40619440 is 4491604.

It is an interprime number because it is at equal distance from previous prime (40619419) and next prime (40619461).

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 40619399 and 40619408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253792 + ... + 253951.

Almost surely, 2^40619440 is an apocalyptic number.

40619440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40619440 is an abundant number, since it is smaller than the sum of its proper divisors (53820944).

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

40619440 is a wasteful number, since it uses less digits than its factorization.

40619440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507756 (or 507750 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40619440 is about 6373.3382147820. The cubic root of 40619440 is about 343.7515332163.

The spelling of 40619440 in words is "forty million, six hundred nineteen thousand, four hundred forty".