7901487 has 12 divisors (see below), whose sum is σ = 12450984. Its totient is φ = 4788720.

The previous prime is 7901483. The next prime is 7901507. The reversal of 7901487 is 7841097.

7901487 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7901487 - 2² = 7901483 is a prime.

It is a super-2 number, since 2×7901487² = 124866993622338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7901483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39808 + ... + 40005.

It is an arithmetic number, because the mean of its divisors is an integer number (1037582).

Almost surely, 2^7901487 is an apocalyptic number.

7901487 is a deficient number, since it is larger than the sum of its proper divisors (4549497).

7901487 is a wasteful number, since it uses less digits than its factorization.

7901487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79830 (or 79827 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 7901487 is about 2810.9583774933. The cubic root of 7901487 is about 199.1756653634.

The spelling of 7901487 in words is "seven million, nine hundred one thousand, four hundred eighty-seven".