3977040 has 80 divisors (see below), whose sum is σ = 12552768. Its totient is φ = 1041408.

The previous prime is 3977011. The next prime is 3977059. The reversal of 3977040 is 407793.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 3976989 and 3977007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17407 + ... + 17633.

Almost surely, 2^3977040 is an apocalyptic number.

3977040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3977040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6276384).

3977040 is an abundant number, since it is smaller than the sum of its proper divisors (8575728).

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

3977040 is a wasteful number, since it uses less digits than its factorization.

3977040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 3977040 is about 1994.2517393749. The cubic root of 3977040 is about 158.4357994791.

The spelling of 3977040 in words is "three million, nine hundred seventy-seven thousand, forty".