7904949 has 16 divisors (see below), whose sum is σ = 12019392. Its totient is φ = 4578048.

The previous prime is 7904947. The next prime is 7904957. The reversal of 7904949 is 9494097.

7904949 = T₁₃₄ + T₁₃₅ + ... + T₃₆₇.

It is not a de Polignac number, because 7904949 - 2¹ = 7904947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7904949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7904947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5299 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (751212).

Almost surely, 2^7904949 is an apocalyptic number.

It is an amenable number.

7904949 is a deficient number, since it is larger than the sum of its proper divisors (4114443).

7904949 is a wasteful number, since it uses less digits than its factorization.

7904949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11956.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 7904949 is about 2811.5741142641. The cubic root of 7904949 is about 199.2047504149.

The spelling of 7904949 in words is "seven million, nine hundred four thousand, nine hundred forty-nine".