45408919 has 2 divisors, whose sum is σ = 45408920. Its totient is φ = 45408918.

The previous prime is 45408907. The next prime is 45408929. The reversal of 45408919 is 91980454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45408919 - 2¹⁵ = 45376151 is a prime.

It is a super-2 number, since 2×45408919² = 4123939849497122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45408929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22704459 + 22704460.

It is an arithmetic number, because the mean of its divisors is an integer number (22704460).

Almost surely, 2^45408919 is an apocalyptic number.

45408919 is a deficient number, since it is larger than the sum of its proper divisors (1).

45408919 is an equidigital number, since it uses as much as digits as its factorization.

45408919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 45408919 is about 6738.6140266378. The cubic root of 45408919 is about 356.7634768890.

The spelling of 45408919 in words is "forty-five million, four hundred eight thousand, nine hundred nineteen".