7401949 has 2 divisors, whose sum is σ = 7401950. Its totient is φ = 7401948.

The previous prime is 7401943. The next prime is 7401971. The reversal of 7401949 is 9491047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 3572100 = 1957^2 + 1890^2 .

It is an emirp because it is prime and its reverse (9491047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7401949 - 2⁵ = 7401917 is a prime.

7401949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7401943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3700974 + 3700975.

It is an arithmetic number, because the mean of its divisors is an integer number (3700975).

Almost surely, 2^7401949 is an apocalyptic number.

It is an amenable number.

7401949 is a deficient number, since it is larger than the sum of its proper divisors (1).

7401949 is an equidigital number, since it uses as much as digits as its factorization.

7401949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 7401949 is about 2720.6523114871. The cubic root of 7401949 is about 194.8866226748.

It can be divided in two parts, 7 and 401949, that added together give a square (401956 = 634²).

The spelling of 7401949 in words is "seven million, four hundred one thousand, nine hundred forty-nine".