3900465 has 12 divisors (see below), whose sum is σ = 6760884. Its totient is φ = 2080224.

The previous prime is 3900439. The next prime is 3900469. The reversal of 3900465 is 5640093.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1937664 + 1962801 = 1392^2 + 1401^2 .

It is not a de Polignac number, because 3900465 - 2⁵ = 3900433 is a prime.

3900465 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3900469) 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, 43294 + ... + 43383.

It is an arithmetic number, because the mean of its divisors is an integer number (563407).

Almost surely, 2^3900465 is an apocalyptic number.

It is an amenable number.

3900465 is a deficient number, since it is larger than the sum of its proper divisors (2860419).

3900465 is a wasteful number, since it uses less digits than its factorization.

3900465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86688 (or 86685 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3900465 is about 1974.9594932555. The cubic root of 3900465 is about 157.4123472977.

The spelling of 3900465 in words is "three million, nine hundred thousand, four hundred sixty-five".